Product on order Ships in 3-5 days

UMP 79x50 [M8] GW - 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 210260

GTIN/EAN: 5906301813934

Diameter Ø

79 mm [±1 mm]

Height

50 mm [±1 mm]

Weight

1.95 g

Load capacity

340.00 kg / 3334.26 N

Coating

[NiCuNi] Nickel

see technical data »

270.00 ZŁ with VAT / pcs + price for transport

219.51 ZŁ net + 23% VAT / pcs

bulk discounts:

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure about your choice?

Pick up the phone and ask +48 888 99 98 98 otherwise get in touch using our online form through our site.
Force and shape of magnets can be estimated on our our magnetic calculator.

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

💡 Guide: How to choose a decent magnet and not get ripped off?

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 79x50 [M8] GW - search holder

Specification / characteristics - UMP 79x50 [M8] GW - search holder

properties

properties	values
Cat. no.	210260
GTIN/EAN	5906301813934
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	79 mm [±1 mm]
Height	50 mm [±1 mm]
Weight	1.95 g
Load capacity ~ ?	340.00 kg / 3334.26 N
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±1 mm

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%

Ecology and recycling (GPSR)

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: 210260-2026

Quick Unit Converter

Force (pull)

Force in kg

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Field Strength

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It is worth betting on proven F200, F300, or F550 models from our offer, which guarantee real power. This specific magnet ensures a laboratory lifting capacity of up to 340.00 kg, which translates into high effectiveness in water. The choice depends on whether you plan to throw from the shore (double-sided) or from a bridge (single-sided).

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.

This construction protects the brittle neodymium from direct impact against stones and the bottom. 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. 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.

It is a technical parameter defining perpendicular break force, not the weight of an object in water. 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.

By selecting the Dhit brand, you receive a product of a significantly higher standard and true magnetic power for the average cost.

Most magnets on the market have thin casings that crack during the first hard impact against concrete or rocks.

It is worth remembering that the same magnet used by the lateral point often has as little as 40 kg of power instead of the declared 200 kg. Interestingly, in the web, it is hard to find recordings demonstrating the actual strength of other brands on the lateral attachment.

{Unlike anonymous sellers, Dhit provides full support and instant service assistance, which is crucial after the transaction. Instead of risking with random brands, it is better to choose proven gear that cares about the happiness of searcher.

Advantages as well as disadvantages of rare earth magnets.

Pros

Apart from their superior magnetic energy, neodymium magnets have these key benefits:

They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
They maintain their magnetic properties even under external field action,
The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
Neodymium magnets achieve maximum magnetic induction on a small area, which ensures high operational effectiveness,
Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
Possibility of precise shaping as well as modifying to individual conditions,
Universal use in future technologies – they are commonly used in computer drives, electric drive systems, diagnostic systems, also complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in small systems

Disadvantages

What to avoid - cons of neodymium magnets: tips and applications.

At strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
Neodymium magnets decrease their power 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 stability even at temperatures up to 230°C
Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
Limited ability of making nuts in the magnet and complex shapes - preferred is a housing - magnetic holder.
Health risk related to microscopic parts of magnets can be dangerous, if swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that tiny parts of these products can complicate diagnosis medical in case of swallowing.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum holding power of the magnet – what contributes to it?

Breakaway force is the result of a measurement for the most favorable conditions, assuming:

on a base made of mild steel, effectively closing the magnetic field
possessing a thickness of min. 10 mm to ensure full flux closure
with an ground contact surface
without any clearance between the magnet and steel
under vertical force vector (90-degree angle)
at conditions approx. 20°C

Key elements affecting lifting force

Bear in mind that the magnet holding may be lower depending on the following factors, starting with the most relevant:

Distance – the presence of foreign body (paint, dirt, gap) interrupts the magnetic circuit, which lowers capacity steeply (even by 50% at 0.5 mm).
Angle of force application – maximum parameter is available only during perpendicular pulling. The resistance to sliding of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
Material type – ideal substrate is pure iron steel. Stainless steels may attract less.
Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps create air cushions, reducing force.
Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity was measured using a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the load capacity is reduced by as much as fivefold. In addition, even a slight gap between the magnet and the plate decreases the holding force.

Precautions when working with NdFeB magnets

GPS Danger

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

Handling guide

Use magnets with awareness. Their immense force can surprise even professionals. Plan your moves and respect their power.

Magnetic media

Equipment safety: Strong magnets can damage payment cards and delicate electronics (pacemakers, hearing aids, mechanical watches).

Magnet fragility

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Collision of two magnets leads to them cracking into small pieces.

ICD Warning

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

No play value

Only for adults. Small elements can be swallowed, leading to severe trauma. Store away from children and animals.

Power loss in heat

Standard neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. This process is irreversible.

Mechanical processing

Powder generated during grinding of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.

Nickel allergy

Nickel alert: The Ni-Cu-Ni coating contains nickel. If skin irritation happens, immediately stop handling magnets and use protective gear.

Finger safety

Mind your fingers. Two large magnets will join immediately with a force of several hundred kilograms, crushing everything in their path. Be careful!

Caution! Need more info? Check our post: Why are neodymium magnets dangerous?

UMP 79x50 [M8] GW - search holder

Technical data - UMP 79x50 [M8] GW - search holder

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Ecology and recycling (GPSR)

Force (pull)

Field Strength

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MPL 5x5x1.2 / N38 - lamellar magnet

Advantages as well as disadvantages of rare earth magnets.

Pros

Disadvantages

Lifting parameters

Maximum holding power of the magnet – what contributes to it?

Key elements affecting lifting force

Precautions when working with NdFeB magnets

GPS Danger

Handling guide

Magnetic media

Magnet fragility

ICD Warning

No play value

Power loss in heat

Mechanical processing

Nickel allergy

Finger safety

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C