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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

bulk discounts:

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Do you have questions?

Contact us by phone +48 22 499 98 98 if you prefer send us a note via form the contact form page.
Strength as well as shape of magnetic components can be checked on our power calculator.

Orders submitted before 14:00 will be dispatched today!

💡 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!

Technical data - 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

Engineering data and GPSR

Material specification

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%

Sustainability

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

Quick Unit Converter

Pulling force

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It is worth betting on proven F200, F300, or F550 models from our offer, which guarantee real power. 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.

The double-sided model attracts from above and below, increasing the chance of hooking a find. Top mounting works well when fishing from a bridge, pier, or well (vertical technique). The double-sided version increases search efficiency by 100%.

The magnet is glued into a solid steel cup and sealed with epoxy resin, protecting it from water. Avoid throwing the magnet against bridge pillars or hard obstacles. After each fishing trip, we recommend rinsing the magnet with fresh water and drying it.

Most of our starter kits are complete and ready to use. In the package, you will find everything needed: strong rope (e.g., 20m), gloves, and hardware. We recommend always securing the thread with glue or tightening the eyelet firmly before first use.

The capacity given in the name (e.g., 310.00 kg) is the maximum value measured in laboratory conditions. 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 receive a higher quality standard and real N52 grade for the average cost.

As a result, despite the affordable cost, the mechanical durability of the Dhit product puts it far ahead of other brands.

Many distributors use a trick by advertising the power measured exclusively on the top hook. Interestingly, in the entire internet, there are virtually no videos demonstrating the actual strength of competitor products on the lateral attachment.

{By choosing GOLD mounts, you bet on a local market leader that perfectly understands the specifics of local rivers and lakes. Don't risk it with unknown goods, stick with proven gear that ensures the happiness of searcher.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Benefits

Apart from their notable magnetism, neodymium magnets have these key benefits:

They do not lose power, even over nearly 10 years – the reduction in power is only ~1% (according to tests),
Magnets effectively protect themselves against demagnetization caused by ambient magnetic noise,
Thanks to the elegant finish, the plating of Ni-Cu-Ni, gold-plated, or silver-plated gives an professional appearance,
Magnetic induction on the top side of the magnet turns out to be strong,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling operation at temperatures approaching 230°C and above...
Possibility of custom machining and modifying to specific requirements,
Huge importance in modern technologies – they find application in hard drives, electric motors, advanced medical instruments, as well as industrial machines.
Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Cons

Drawbacks and weaknesses of neodymium magnets: weaknesses and usage proposals

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
Due to limitations in producing nuts and complex forms in magnets, we recommend using cover - magnetic mechanism.
Possible danger related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that tiny parts of these magnets can complicate diagnosis medical after entering the body.
With budget limitations the cost of neodymium magnets can be a barrier,

Lifting parameters

Detachment force of the magnet in optimal conditions – what it depends on?

The lifting capacity listed is a result of laboratory testing executed under the following configuration:

with the application of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
with a thickness of at least 10 mm
characterized by even structure
with zero gap (no paint)
under axial force vector (90-degree angle)
at temperature approx. 20 degrees Celsius

Determinants of lifting force in real conditions

In real-world applications, the actual holding force depends on many variables, listed from most significant:

Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
Load vector – maximum parameter is available only during pulling at a 90° angle. The force required to slide of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
Plate thickness – insufficiently thick sheet does not close the flux, causing part of the power to be wasted into the air.
Material composition – different alloys reacts the same. High carbon content weaken the interaction with the magnet.
Surface structure – the more even the plate, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
Thermal environment – temperature increase results in weakening of force. Check the thermal limit for a given model.

Lifting capacity was assessed using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular detachment force, however under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate decreases the lifting capacity.

Safety rules for work with neodymium magnets

Power loss in heat

Watch the temperature. Heating the magnet above 80 degrees Celsius will destroy its properties and strength.

Pinching danger

Pinching hazard: The attraction force is so great that it can result in hematomas, pinching, and broken bones. Use thick gloves.

Do not underestimate power

Use magnets consciously. Their huge power can shock even professionals. Stay alert and respect their force.

Machining danger

Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this risks ignition.

Nickel allergy

Studies show that nickel (the usual finish) is a potent allergen. If your skin reacts to metals, refrain from direct skin contact or select versions in plastic housing.

Risk of cracking

NdFeB magnets are sintered ceramics, which means they are prone to chipping. Collision of two magnets leads to them cracking into shards.

Safe distance

Very strong magnetic fields can erase data on credit cards, hard drives, and other magnetic media. Stay away of at least 10 cm.

Keep away from children

Only for adults. Small elements pose a choking risk, causing intestinal necrosis. Store out of reach of children and animals.

Pacemakers

Individuals with a pacemaker should maintain an large gap from magnets. The magnetism can disrupt the operation of the implant.

Precision electronics

A strong magnetic field interferes with the operation of compasses in smartphones and GPS navigation. Do not bring magnets near a smartphone to avoid breaking the sensors.

Danger! More info about risks in the article: Magnet Safety Guide.

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

Technical data - 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

Material specification

Sustainability

Pulling force

Magnetic Field

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UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread

Advantages and disadvantages of Nd2Fe14B magnets.

Benefits

Cons

Lifting parameters

Detachment force of the magnet in optimal conditions – what it depends on?

Determinants of lifting force in real conditions

Safety rules for work with neodymium magnets

Power loss in heat

Pinching danger

Do not underestimate power

Machining danger

Nickel allergy

Risk of cracking

Safe distance

Keep away from children

Pacemakers

Precision electronics

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Advantages and disadvantages of Nd₂Fe₁₄B magnets.