Product available Ships in 3 days

UMP 67x28 [M8+M10] GW F120 Lina / N38 - 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 210381

GTIN/EAN: 5906301814009

5.00

Diameter Ø

67 mm [±1 mm]

Height

28 mm [±1 mm]

Weight

700 g

Load capacity

180.00 kg / 1765.20 N

Coating

[NiCuNi] Nickel

Magnetic Flux

~ 8 000 Gauss [±5%]

view technical specifications »

150.00 ZŁ with VAT / pcs + price for transport

121.95 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Want to talk magnets?

Pick up the phone and ask +48 22 499 98 98 alternatively let us know using inquiry form our website.
Parameters along with appearance of magnets can be checked on our modular 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!

Product card - UMP 67x28 [M8+M10] GW F120 Lina / N38 - search holder

Specification / characteristics - UMP 67x28 [M8+M10] GW F120 Lina / N38 - search holder

properties

properties	values
Cat. no.	210381
GTIN/EAN	5906301814009
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	67 mm [±1 mm]
Height	28 mm [±1 mm]
Weight	700 g
Load capacity ~ ?	180.00 kg / 1765.20 N
Coating	[NiCuNi] Nickel
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	2xM8/1xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMP 67x28 [M8+M10] GW F120 Lina / N38 - search holder

properties	values	units
remenance Br [min. - max.] ?	12.2-12.6	kGs
remenance Br [min. - max.] ?	1220-1260	mT
coercivity bHc ?	10.8-11.5	kOe
coercivity bHc ?	860-915	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	36-38	BH max MGOe
energy density [min. - max.] ?	287-303	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

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%

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: 210381-2026

Quick Unit Converter

Pulling force

Force in kg

Force (N)

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Gauss (Gs)

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For underwater searches, we recommend specialized holders from the GOLD series, designed for working in difficult conditions. Model UMP 67x28 [M8+M10] GW F120 Lina / N38 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. The side eyelet ensures the magnet doesn't stand sideways or "on edge" during pulling. 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). After each fishing trip, we recommend rinsing the magnet with fresh water and drying it.

We offer both standalone holders and ready-made gift sets (depending on the selected option in the store). A full set usually contains: magnet, polypropylene rope with appropriate strength, protective gloves, hook, and carabiner. We recommend always securing the thread with glue or tightening the eyelet firmly before first use.

The capacity given in the name (e.g., 180.00 kg) is the maximum value measured in laboratory conditions. The magnet may slide on round elements (bicycle frame) due to the small contact area. Therefore, to pull objects weighing 10kg from the water, a magnet with a capacity of 200-300kg is often needed.

Possessing and using a neodymium magnet to clean the bottom is generally legal, provided you are not searching for artifacts protected by law. We recommend familiarizing yourself with current local regulations and heritage protection laws.

By selecting Dhit GOLD mounts, you get a product of a significantly higher standard and real N52 grade for the same market price.

Most competitor mounts have thin casings that crack during the first hard impact against concrete or rocks.

Many distributors use a trick by advertising the power tested only on the top hook. GOLD mounts focuses on honest data by stating the actual capabilities of the gear, so you avoid disappointment during real field work.

{By choosing Dhit, you support Polish engineering that perfectly understands the specifics of local rivers and lakes. Instead of risking with random brands, it is better to choose the market leader that ensures the satisfaction of every user.

Pros as well as cons of rare earth magnets.

Benefits

Besides their remarkable strength, neodymium magnets offer the following advantages:

They do not lose magnetism, even over approximately ten years – the reduction in lifting capacity is only ~1% (theoretically),
They are extremely resistant to demagnetization induced by external field influence,
In other words, due to the aesthetic surface of nickel, the element becomes visually attractive,
The surface of neodymium magnets generates a maximum magnetic field – this is a key feature,
Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for functioning at temperatures reaching 230°C and above...
Possibility of individual forming and adjusting to atypical needs,
Universal use in high-tech industry – they find application in mass storage devices, electric motors, advanced medical instruments, and technologically advanced constructions.
Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Limitations

Cons of neodymium magnets: weaknesses and usage proposals

They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
Limited ability of producing threads in the magnet and complicated shapes - preferred is casing - magnetic holder.
Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small components of these products can disrupt the diagnostic process medical in case of swallowing.
Due to neodymium price, their price is relatively high,

Pull force analysis

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

The lifting capacity listed is a theoretical maximum value conducted under specific, ideal conditions:

with the use of a sheet made of special test steel, guaranteeing full magnetic saturation
whose thickness reaches at least 10 mm
characterized by lack of roughness
without the slightest insulating layer between the magnet and steel
for force acting at a right angle (in the magnet axis)
in temp. approx. 20°C

Practical aspects of lifting capacity – factors

Holding efficiency impacted by specific conditions, including (from most important):

Distance (between the magnet and the plate), because even a microscopic distance (e.g. 0.5 mm) can cause a decrease in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
Steel type – mild steel gives the best results. Higher carbon content decrease magnetic permeability and lifting capacity.
Surface finish – ideal contact is possible only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
Operating temperature – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.

H&S for magnets

Permanent damage

Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will ruin its magnetic structure and pulling force.

Medical interference

People with a ICD must keep an large gap from magnets. The magnetism can interfere with the functioning of the life-saving device.

Nickel allergy

Some people experience a hypersensitivity to nickel, which is the common plating for neodymium magnets. Extended handling might lead to dermatitis. We suggest wear safety gloves.

Dust is flammable

Machining of NdFeB material carries a risk of fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Electronic hazard

Device Safety: Neodymium magnets can ruin payment cards and sensitive devices (heart implants, hearing aids, mechanical watches).

Do not underestimate power

Before use, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.

Magnets are brittle

NdFeB magnets are sintered ceramics, meaning they are very brittle. Impact of two magnets will cause them cracking into small pieces.

Hand protection

Large magnets can break fingers instantly. Under no circumstances place your hand between two strong magnets.

Magnetic interference

Be aware: neodymium magnets produce a field that confuses sensitive sensors. Keep a separation from your phone, device, and navigation systems.

Keep away from children

Only for adults. Tiny parts pose a choking risk, leading to severe trauma. Keep out of reach of kids and pets.

Warning! Looking for details? Read our article: Why are neodymium magnets dangerous?

UMP 67x28 [M8+M10] GW F120 Lina / N38 - search holder

Product card - UMP 67x28 [M8+M10] GW F120 Lina / N38 - search holder

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Material specification

Environmental data

Pulling force

Field Strength

Other products

UMH 75x18x68 [M8] / N38 - magnetic holder with hook

MW 10x10 / N38 - cylindrical magnet

HH 36x7.5 [M6] / N38 - through hole magnetic holder

MP 20x5x27 / N38 - ring magnet

Pros as well as cons of rare earth magnets.

Benefits

Limitations

Pull force analysis

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

Practical aspects of lifting capacity – factors

H&S for magnets

Permanent damage

Medical interference

Nickel allergy

Dust is flammable

Electronic hazard

Do not underestimate power

Magnets are brittle

Hand protection

Magnetic interference

Keep away from children

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C