UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - search holder

UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - search holder - ujęcie 2

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UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - search holder

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: PLN 1-6500
Rating: 5

search holder

Catalog no 210476

GTIN/EAN: 5906301814139

5.00

Diameter Ø

75 mm [±1 mm]

Height

25 mm [±1 mm]

Weight

1800 g

Load capacity

601.00 kg / 5893.80 N

Coating

[NiCuNi] Nickel

Magnetic Flux

~ 20 000 Gauss [±5%]

technical details »

300.00 ZŁ with VAT / pcs + price for transport

243.90 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure which magnet to buy?

Call us +48 22 499 98 98 or drop us a message via form our website.
Specifications and structure of magnets can be verified with our online calculation tool.

Same-day processing for orders placed before 14:00.

💡 Check why professionals choose Dhit over cheap substitutes

Don't be fooled by amateur online tests – go for certified quality and specific parameters that guarantee success:

📏 Magnet thickness in the casing (min. 10mm) – This is what matters most! Thin magnets are weak. Thanks to the 1cm thickness of N52 neodymium, your magnet "sees" metal even through thick rust and mud.
🛡️ Armored protection (Black Epoxy) – Forget about rust. This coating doesn't chip when hitting rocks and protects the magnet in water much better than regular nickel, which fails quickly.
🧲 Eyelets that don't steal power – Made of special non-magnetic steel, so they don't stick to the magnet and don't block the force. Important: mount only one eyelet at a time! Using 3 at once is a mistake that weakens the magnet.
🧶 Certified rope (min. 8mm) – You gain the certainty that your gear won't stay at the bottom. It's thick and comfortable, so it doesn't cut your fingers when pulling out heavy scrap metal.
🚀 Our advantage: We are the only ones combining the strongest N52 neodymium (10mm thick) with non-magnetic eyelets. This is real power and durability you won't find anywhere else.

Invest in solid equipment and enjoy the results!

The Double version offers two attachment points, giving more flexibility. You can mount the eyelet on the side for shore casting or on top for bridge fishing. Single-mount magnets are less versatile when dragging from a riverbank.

Choosing this holder brings many benefits:
Double active surface: Increases the chance of catching items.
Versatility: Possibility to use two mounts separately or together.
Double power potential: The combined power of two F200 GOLD holders is nearly 600 kg.
Better durability: Lower risk of mechanical damage.
Better value for money: An economical choice for serious magnet fishers.

Certainly, the UMP F200 GOLD in the dual (double) version is an excellent choice for every seeker who values performance and flexibility.

Technical - UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - search holder

Specification / characteristics - UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - search holder

properties

properties	values
Cat. no.	210476
GTIN/EAN	5906301814139
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
Diameter Ø	75 mm [±1 mm]
Height	25 mm [±1 mm]
Weight	1800 g
Load capacity ~ ?	601.00 kg / 5893.80 N
Coating	[NiCuNi] Nickel
Series	GOLD
Holder Type	4 sided
Material Type	Structural steel S235 (ferrous)
Magnetic Flux	~ 20 000 Gauss [±5%]
Rope Length	25 m
Rope Capacity	~ 1595 kg
Rope Diameter	Ø 8 mm
Gloves	1 pair
Size/Mount Quantity	4xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N42

Specification / characteristics UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - search holder

properties	values	units
remenance Br [min. - max.] ?	12.9-13.2	kGs
remenance Br [min. - max.] ?	1290-1320	mT
coercivity bHc ?	10.8-12.0	kOe
coercivity bHc ?	860-955	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	40-42	BH max MGOe
energy density [min. - max.] ?	318-334	BH max KJ/m
max. temperature ?	≤ 80	°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	312 - 380	°C
Curie Temperature TF	593 - 716	°F
Specific resistance	150	μΩ⋅cm
Bending strength	250	MPa
Compressive strength	1000~1100	MPa
Thermal expansion parallel (∥) to orientation (M)	(3-4) x 10^-6	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10^-6	°C^-1
Young's modulus	1.7 x 10⁴	kg/mm²

Technical and environmental data

Elemental analysis

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Environmental data

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 210476-2026

Magnet Unit Converter

Force (pull)

Kilograms (kg)

Force (N)

lbs

Field Strength

Induction (Gs)

Tesla (T)

Insert a number into a field, and the rest will recalculate automatically.

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The best choice are magnets in thick, chrome-plated housings dedicated to water applications. It is equipment that can handle pulling heavy and silted objects from the river bottom. For beginners, we recommend lighter single-sided models (F80-F200), for advanced users - heavier double-sided (Two-Side) ones.

Double-sided holders (Two-Side) have two active magnetic surfaces and two mounting holes. Side mounting is ideal for throwing from the shore, as the magnet drags flat along the bottom. Single-sided magnets are usually lighter and cheaper but less effective for long throws.

This construction protects the brittle neodymium from direct impact against stones and the bottom. Avoid throwing the magnet against bridge pillars or hard obstacles. Maintenance (e.g., WD-40) prevents surface corrosion of the steel housing.

Most of our starter kits are complete and ready to use. We often add thread glue to secure the eyelet against unscrewing in water. Using thread glue is crucial to not lose the magnet in silt.

The capacity given in the name (e.g., 601.00 kg) is the maximum value measured in laboratory conditions. The magnet may slide on round elements (bicycle frame) due to the small contact area. A large power reserve is essential in real search conditions.

If you find a dangerous object (unexploded ordnance) or an antique, you have a legal obligation to report it to appropriate services (Police, conservator). It is worth acting responsibly, cleaning up after yourself, and caring for the environment by removing fished-out scrap.

In contrast to many market offers, Dhit uses the highest quality components, which translates into a clear advantage during treasure hunting.

The GOLD series feature a robust construction that provides a true shield for the brittle neodymium.

You should know that the same mount pulled by the lateral point can actually show as little as a fraction of power instead of the declared 200 kg. The Dhit brand guarantees honest data by providing the real parameters of the magnet, so you avoid disappointment during treasure hunting.

{In contrast to competitors importing from China, Dhit provides full support and instant warranty help, which is crucial after the purchase. Instead of risking with unknown goods, it is better to choose the market leader that ensures the satisfaction of every user.

Advantages as well as disadvantages of rare earth magnets.

Pros

Besides their magnetic performance, neodymium magnets are valued for these benefits:

They virtually do not lose strength, because even after ten years the performance loss is only ~1% (according to literature),
Magnets effectively protect themselves against loss of magnetization caused by foreign field sources,
In other words, due to the reflective surface of nickel, the element looks attractive,
Neodymium magnets ensure maximum magnetic induction on a contact point, which allows for strong attraction,
Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
Considering the option of free molding and customization to individualized needs, neodymium magnets can be manufactured in a variety of geometric configurations, which expands the range of possible applications,
Huge importance in advanced technology sectors – they find application in HDD drives, electromotive mechanisms, precision medical tools, and complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which makes them useful in compact constructions

Cons

Characteristics of disadvantages of neodymium magnets and proposals for their use:

To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
Magnets exposed to a humid environment can rust. Therefore during using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
Due to limitations in creating threads and complicated shapes in magnets, we propose using a housing - magnetic holder.
Possible danger related to microscopic parts of magnets pose a threat, if swallowed, which gains importance in the context of child safety. Additionally, small components of these devices are able to disrupt the diagnostic process medical when they are in the body.
Due to neodymium price, their price exceeds standard values,

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what it depends on?

Breakaway force was determined for optimal configuration, taking into account:

on a block made of mild steel, effectively closing the magnetic field
with a cross-section no less than 10 mm
with a surface free of scratches
under conditions of gap-free contact (metal-to-metal)
for force acting at a right angle (in the magnet axis)
at conditions approx. 20°C

Practical lifting capacity: influencing factors

Real force is influenced by specific conditions, mainly (from priority):

Air gap (between the magnet and the plate), as even a very small distance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
Plate material – low-carbon steel gives the best results. Alloy steels decrease magnetic properties and lifting capacity.
Surface finish – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
Heat – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).

Lifting capacity was determined by applying a polished steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, in contrast under parallel forces the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.

Warnings

Crushing risk

Pinching hazard: The attraction force is so great that it can result in hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Dust is flammable

Mechanical processing of neodymium magnets carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Keep away from electronics

Be aware: neodymium magnets produce a field that interferes with precision electronics. Keep a safe distance from your phone, device, and navigation systems.

Do not overheat magnets

Control the heat. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and pulling force.

Swallowing risk

NdFeB magnets are not suitable for play. Swallowing multiple magnets can lead to them pinching intestinal walls, which poses a severe health hazard and necessitates immediate surgery.

Fragile material

Despite the nickel coating, the material is delicate and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Data carriers

Device Safety: Strong magnets can damage payment cards and sensitive devices (pacemakers, hearing aids, timepieces).

Health Danger

Warning for patients: Strong magnetic fields disrupt medical devices. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Conscious usage

Exercise caution. Rare earth magnets act from a long distance and connect with massive power, often faster than you can move away.

Warning for allergy sufferers

A percentage of the population suffer from a contact allergy to nickel, which is the typical protective layer for NdFeB magnets. Prolonged contact might lead to a rash. We suggest wear safety gloves.

Security! Want to know more? Check our post: Are neodymium magnets dangerous?

UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - search holder

Technical - UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - search holder

Magnetic properties of material N42

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Environmental data

Force (pull)

Field Strength

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UMH 25x8x45 [M5] / N38 - magnetic holder with hook

MW 14x3 / N38 - cylindrical magnet

UMGGW 34x8 [M4] GW / N38 - magnetic holder rubber internal thread

Advantages as well as disadvantages of rare earth magnets.

Pros

Cons

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what it depends on?

Practical lifting capacity: influencing factors

Warnings

Crushing risk

Dust is flammable

Keep away from electronics

Do not overheat magnets

Swallowing risk

Fragile material

Data carriers

Health Danger

Conscious usage

Warning for allergy sufferers

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C