Product available Ships tomorrow

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%]

see parameters »

200.00 ZŁ with VAT / pcs + price for transport

162.60 ZŁ net + 23% VAT / pcs

bulk discounts:

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price from 1 pcs

162.60 ZŁ

200.00 ZŁ

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152.84 ZŁ

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143.09 ZŁ

176.00 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Hunting for a discount?

Call us +48 888 99 98 98 alternatively let us know through our online form the contact page.
Parameters along with shape of magnets can be calculated on our online calculation tool.

Orders submitted before 14:00 will be dispatched today!

💡 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!

Product card - 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 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%

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

Measurement Calculator

Magnet pull force

Force in kg

Force in lbs

Magnetic Induction

Induction (Gs)

Tesla (T)

Enter a value in a box, to see the rest will recalculate in real-time.

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HH 42x8.8 [M6] / N38 - through hole magnetic holder

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

The 2xTwo-Side version is more versatile, allowing the eyelet to be mounted in two positions. Side mounting is ideal for throwing from the shore, as the magnet drags flat along the bottom. The double-sided version increases search efficiency by 100%.

This construction protects the brittle neodymium from direct impact against stones and the bottom. Despite solid construction, neodymium is a brittle material and can chip upon very strong impact (e.g., against concrete). Maintenance (e.g., WD-40) prevents surface corrosion of the steel housing.

We offer both standalone holders and ready-made gift sets (depending on the selected option in the store). 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., 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.

If you find a dangerous object (unexploded ordnance) or an antique, you have a legal obligation to report it to appropriate services (Police, conservator). We recommend familiarizing yourself with current local regulations and heritage protection laws.

In contrast to other brands, Dhit uses the highest quality components, which translates into a better results during treasure hunting.

Most competitor mounts have thin casings that crack during the first hard impact against underwater obstacles.

You should know that the same mount pulled by the lateral point often has only 40 kg of strength instead of the declared 200 kg. The Dhit brand focuses on honest data by stating the actual capabilities of the magnet, so you avoid disappointment during real field work.

{By choosing GOLD mounts, you bet on Polish engineering that perfectly understands the conditions of local rivers and lakes. Instead of risking with unknown goods, it is better to choose the market leader that ensures the satisfaction of searcher.

Strengths and weaknesses of rare earth magnets.

Advantages

Besides their remarkable field intensity, neodymium magnets offer the following advantages:

They do not lose magnetism, even during approximately 10 years – the drop in lifting capacity is only ~1% (theoretically),
They retain their magnetic properties even under external field action,
The use of an refined finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
Neodymium magnets create maximum magnetic induction on a contact point, which allows for strong attraction,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Thanks to modularity in shaping and the ability to adapt to individual projects,
Key role in modern industrial fields – they are utilized in computer drives, electric motors, advanced medical instruments, also technologically advanced constructions.
Thanks to their power density, small magnets offer high operating force, with minimal size,

Weaknesses

Disadvantages of neodymium magnets:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
Due to limitations in realizing nuts and complex shapes in magnets, we recommend using casing - magnetic mount.
Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, tiny parts of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Optimal lifting capacity of a neodymium magnet – what contributes to it?

Magnet power was defined for ideal contact conditions, assuming:

with the contact of a yoke made of low-carbon steel, ensuring full magnetic saturation
with a cross-section of at least 10 mm
with an ideally smooth touching surface
with zero gap (no paint)
for force applied at a right angle (in the magnet axis)
in stable room temperature

Practical aspects of lifting capacity – factors

It is worth knowing that the application force will differ subject to the following factors, starting with the most relevant:

Clearance – existence of any layer (paint, tape, gap) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
Pull-off angle – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
Steel type – mild steel gives the best results. Alloy steels lower magnetic permeability and lifting capacity.
Surface condition – ground elements ensure maximum contact, which increases field saturation. Uneven metal weaken the grip.
Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate decreases the holding force.

H&S for magnets

Material brittleness

Despite the nickel coating, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Medical implants

Life threat: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Caution required

Be careful. Rare earth magnets act from a long distance and connect with huge force, often quicker than you can react.

GPS Danger

Navigation devices and mobile phones are extremely sensitive to magnetism. Close proximity with a strong magnet can decalibrate the sensors in your phone.

Heat warning

Keep cool. NdFeB magnets are sensitive to heat. If you need resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

Avoid contact if allergic

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If skin irritation happens, cease handling magnets and wear gloves.

Dust explosion hazard

Combustion risk: Neodymium dust is highly flammable. Avoid machining magnets without safety gear as this may cause fire.

Keep away from children

NdFeB magnets are not intended for children. Accidental ingestion of several magnets may result in them attracting across intestines, which poses a critical condition and requires urgent medical intervention.

Magnetic media

Do not bring magnets close to a purse, computer, or screen. The magnetic field can destroy these devices and wipe information from cards.

Bodily injuries

Danger of trauma: The attraction force is so immense that it can result in blood blisters, crushing, and even bone fractures. Protective gloves are recommended.

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

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

Product card - 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

Sustainability

Magnet pull force

Magnetic Induction

Other proposals

AM ucho małe [M8] - magnetic accessories

MW 33x10 / N38 - cylindrical magnet

BM 650x180x70 [4x M8] - magnetic beam

HH 42x8.8 [M6] / N38 - through hole magnetic holder

Strengths and weaknesses of rare earth magnets.

Advantages

Weaknesses

Holding force characteristics

Optimal lifting capacity of a neodymium magnet – what contributes to it?

Practical aspects of lifting capacity – factors

H&S for magnets

Material brittleness

Medical implants

Caution required

GPS Danger

Heat warning

Avoid contact if allergic

Dust explosion hazard

Keep away from children

Magnetic media

Bodily injuries

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C