Product available Ships in 2 days

UMP 75x25 [M10x3] GW F200 GOLD 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 210433

GTIN/EAN: 5906301814085

5.00

Diameter Ø

75 mm [±1 mm]

Height

25 mm [±1 mm]

Weight

900 g

Load capacity

310.00 kg / 3040.06 N

Coating

[NiCuNi] Nickel

Magnetic Flux

~ 8 000 Gauss [±5%]

product specifications »

200.00 ZŁ with VAT / pcs + price for transport

162.60 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Need help making a decision?

Contact us by phone +48 888 99 98 98 or let us know using contact form the contact form page.
Weight and form of neodymium magnets can be reviewed using our our magnetic calculator.

Orders placed before 14:00 will be shipped the same business day.

💡 Check why professionals choose Dhit over cheap substitutes

Instead of believing fairy tales on YouTube with tests on uncertified equipment, see what really determines your magnet's power:

📏 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!

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

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

properties

properties	values
Cat. no.	210433
GTIN/EAN	5906301814085
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	900 g
Load capacity ~ ?	310.00 kg / 3040.06 N
Coating	[NiCuNi] Nickel
Series	GOLD
Holder Type	2 sided
Material Type	Structural steel S235 (ferrous)
Magnetic Flux	~ 8 000 Gauss [±5%]
Rope Length	25 m
Rope Capacity	~ 1595 kg
Rope Diameter	Ø 8 mm
Gloves	1 pair
Size/Mount Quantity	3xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N42

Specification / characteristics UMP 75x25 [M10x3] GW F200 GOLD 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 specification and ecology

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: 210433-2026

Measurement Calculator

Pulling force

Force in kg

Force (N)

Pounds (lbs)

Magnetic Induction

Induction (T)

Input your value in a single slot to see the conversion for the other units right away.

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For underwater searches, we recommend specialized holders from the GOLD series, designed for working in difficult conditions. Model UMP 75x25 [M10x3] GW F200 GOLD Lina / N42 offers an optimal weight-to-pull force ratio, which is important for repeated throwing. 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. Top mounting works well when fishing from a bridge, pier, or well (vertical technique). Single-sided magnets are usually lighter and cheaper but less effective for long throws.

The magnet is glued into a solid steel cup and sealed with epoxy resin, protecting it from water. The housing significantly increases lifespan but does not make the magnet completely indestructible. Maintenance (e.g., WD-40) prevents surface corrosion of the steel housing.

Check the product title and description to see if you are buying just the magnet or the XL set. We often add thread glue to secure the eyelet against unscrewing in water. We recommend always securing the thread with glue or tightening the eyelet firmly before first use.

It is a technical parameter defining perpendicular break force, not the weight of an object in water. In a river, objects are often rusty, silted, or irregular in shape (e.g., pipes), which drastically reduces grip strength. A large power reserve is essential in real search conditions.

Possessing and using a neodymium magnet to clean the bottom is generally legal, provided you are not searching for artifacts protected by law. Magnet fishing is an eco-friendly hobby if you clean the river from trash and scrap.

By selecting the Dhit brand, you get a higher quality standard and true magnetic power for the same market price.

The GOLD series feature a robust construction that provides a true shield for the magnetic core.

Many distributors employ a tactic by advertising the power tested only on the vertical mount. The Dhit brand guarantees honest data by stating the actual capabilities of the magnet, so you can be sure during real field work.

{Unlike anonymous sellers, Dhit provides full support and instant warranty help, which gives peace of mind after the purchase. Instead of risking with random brands, it is better to choose proven gear that cares about the satisfaction of every user.

Pros and cons of neodymium magnets.

Advantages

Besides their stability, neodymium magnets are valued for these benefits:

They have constant strength, and over nearly ten years their performance decreases symbolically – ~1% (according to theory),
They feature excellent resistance to magnetism drop when exposed to external fields,
In other words, due to the glossy layer of silver, the element gains a professional look,
Magnets are characterized by extremely high magnetic induction on the active area,
Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
Thanks to the ability of flexible forming and adaptation to individualized projects, magnetic components can be modeled in a variety of geometric configurations, which makes them more universal,
Versatile presence in modern technologies – they serve a role in mass storage devices, electric motors, medical devices, as well as multitasking production systems.
Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Disadvantages

Cons of neodymium magnets: tips and applications.

At very strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
Limited ability of producing nuts in the magnet and complex forms - recommended is cover - magnet mounting.
Potential hazard related to microscopic parts of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child safety. Furthermore, small elements of these magnets can be problematic in diagnostics medical when they are in the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Holding force characteristics

Highest magnetic holding force – what affects it?

The declared magnet strength represents the maximum value, measured under optimal environment, meaning:

using a sheet made of mild steel, serving as a circuit closing element
possessing a massiveness of minimum 10 mm to ensure full flux closure
characterized by lack of roughness
with zero gap (no paint)
during detachment in a direction perpendicular to the plane
at room temperature

Magnet lifting force in use – key factors

Holding efficiency is affected by specific conditions, mainly (from priority):

Distance (betwixt the magnet and the plate), since even a very small clearance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, rust or dirt).
Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the maximum value.
Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
Plate material – mild steel attracts best. Alloy steels reduce magnetic properties and lifting capacity.
Surface quality – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
Thermal environment – temperature increase results in weakening of induction. Check the thermal limit for a given model.

Lifting capacity was assessed by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under shearing force the lifting capacity is smaller. In addition, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

H&S for magnets

Operating temperature

Control the heat. Heating the magnet to high heat will permanently weaken its properties and strength.

Serious injuries

Big blocks can break fingers instantly. Never put your hand betwixt two attracting surfaces.

Electronic devices

Very strong magnetic fields can erase data on credit cards, HDDs, and storage devices. Keep a distance of at least 10 cm.

Allergy Warning

Studies show that the nickel plating (standard magnet coating) is a strong allergen. For allergy sufferers, refrain from direct skin contact or choose encased magnets.

Impact on smartphones

Remember: neodymium magnets generate a field that interferes with sensitive sensors. Keep a separation from your phone, tablet, and GPS.

Magnets are brittle

Despite the nickel coating, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Danger to pacemakers

Individuals with a heart stimulator have to maintain an absolute distance from magnets. The magnetic field can interfere with the operation of the implant.

Dust is flammable

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

Immense force

Handle magnets consciously. Their immense force can shock even experienced users. Stay alert and respect their force.

Swallowing risk

Adult use only. Small elements can be swallowed, causing severe trauma. Keep away from children and animals.

Attention! More info about hazards in the article: Safety of working with magnets.

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

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

Magnetic properties of material N42

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Environmental data

Pulling force

Magnetic Induction

Other products

SM 25x200 [2xM8] / N42 - magnetic separator

SM 32x150 [2xM8] / N52 - magnetic separator

UMGZ 16x13x5 [M4] GZ / N38 - magnetic holder external thread

UMH 42x9x46 [M6] / N38 - magnetic holder with hook

Pros and cons of neodymium magnets.

Advantages

Disadvantages

Holding force characteristics

Highest magnetic holding force – what affects it?

Magnet lifting force in use – key factors

H&S for magnets

Operating temperature

Serious injuries

Electronic devices

Allergy Warning

Impact on smartphones

Magnets are brittle

Danger to pacemakers

Dust is flammable

Immense force

Swallowing risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C