Product on order Ships in 3-5 days

UMP 29x10 [M5] 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 210230

GTIN/EAN: 5906301813903

Diameter Ø

29 mm [±1 mm]

Height

10 mm [±1 mm]

Weight

0.1 g

Load capacity

32.00 kg / 313.81 N

Coating

[NiCuNi] Nickel

product parameters »

10.50 ZŁ with VAT / pcs + price for transport

8.54 ZŁ net + 23% VAT / pcs

bulk discounts:

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Need help making a decision?

Pick up the phone and ask +48 888 99 98 98 otherwise contact us through our online form through our site.
Specifications along with appearance of a magnet can be checked on our force calculator.

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

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

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 details - UMP 29x10 [M5] GW - search holder

Specification / characteristics - UMP 29x10 [M5] GW - search holder

properties

properties	values
Cat. no.	210230
GTIN/EAN	5906301813903
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	29 mm [±1 mm]
Height	10 mm [±1 mm]
Weight	0.1 g
Load capacity ~ ?	32.00 kg / 313.81 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%

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: 210230-2026

Measurement Calculator

Pulling force

Newtons (N)

Pounds (lbs)

Field Strength

Put your value in just one field to get results in all other fields right away.

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The best choice are magnets in thick, chrome-plated housings dedicated to water applications. It is equipment that can handle pulling heavy and silted objects from the river bottom. The choice depends on whether you plan to throw from the shore (double-sided) or from a bridge (single-sided).

The 2xTwo-Side version is more versatile, allowing the eyelet to be mounted in two positions. The side eyelet ensures the magnet doesn't stand sideways or "on edge" during pulling. Single-sided magnets are usually lighter and cheaper but less effective for long throws.

Our holders have a thick steel housing covered with an anti-corrosion layer (chrome, nickel, zinc). 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.

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. Using thread glue is crucial to not lose the magnet in silt.

The capacity given in the name (e.g., 32.00 kg) is the maximum value measured in laboratory conditions. Dirt, rust, paint, and algae create a distance that weakens the magnet by even 70-80%. 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.

It is the smartest investment because for the same money, you obtain professional-grade equipment that will serve you for much longer than budget alternatives.

As a result, despite the affordable cost, the lifespan of the Dhit product puts it a step above the competition.

Many sellers employ a tactic by promoting the pull force tested exclusively on the vertical mount. The Dhit brand focuses on honest data by stating the real parameters of the gear, so you avoid disappointment during treasure hunting.

{By choosing GOLD mounts, you bet on a local market leader that perfectly understands the conditions of local rivers and lakes. Instead of risking with unknown goods, stick with proven gear that ensures the happiness of searcher.

Strengths as well as weaknesses of neodymium magnets.

Benefits

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

They do not lose power, even during around ten years – the drop in power is only ~1% (according to tests),
Neodymium magnets prove to be exceptionally resistant to demagnetization caused by external interference,
The use of an metallic layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
Neodymium magnets deliver maximum magnetic induction on a their surface, which increases force concentration,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Due to the potential of accurate shaping and adaptation to individualized requirements, magnetic components can be manufactured in a broad palette of shapes and sizes, which increases their versatility,
Significant place in modern technologies – they are commonly used in hard drives, drive modules, medical devices, as well as technologically advanced constructions.
Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which makes them useful in small systems

Disadvantages

Disadvantages of NdFeB magnets:

At strong impacts they can break, therefore we advise placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's 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. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
Limited possibility of creating nuts in the magnet and complicated shapes - recommended is cover - magnet mounting.
Potential hazard related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, 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 lifting capacity of the magnet – what affects it?

The declared magnet strength represents the peak performance, recorded under laboratory conditions, specifically:

on a block made of structural steel, perfectly concentrating the magnetic field
possessing a thickness of minimum 10 mm to ensure full flux closure
with an ideally smooth touching surface
under conditions of no distance (surface-to-surface)
under axial force vector (90-degree angle)
in neutral thermal conditions

Lifting capacity in real conditions – factors

Holding efficiency is affected by working environment parameters, including (from most important):

Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
Plate thickness – too thin sheet does not accept the full field, causing part of the power to be escaped into the air.
Steel grade – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
Surface finish – ideal contact is obtained only on smooth steel. Rough texture create air cushions, weakening the magnet.
Temperature influence – high temperature reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, however under parallel forces the load capacity is reduced by as much as 75%. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.

H&S for magnets

Precision electronics

GPS units and mobile phones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can decalibrate the sensors in your phone.

This is not a toy

Product intended for adults. Small elements pose a choking risk, leading to severe trauma. Keep out of reach of children and animals.

Thermal limits

Keep cool. Neodymium magnets are susceptible to heat. If you require operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Safe operation

Before starting, read the rules. Sudden snapping can break the magnet or hurt your hand. Think ahead.

Fire warning

Dust produced during machining of magnets is flammable. Do not drill into magnets without proper cooling and knowledge.

Crushing force

Pinching hazard: The pulling power is so great that it can cause hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Pacemakers

Life threat: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Allergic reactions

Medical facts indicate that the nickel plating (the usual finish) is a common allergen. For allergy sufferers, avoid touching magnets with bare hands and choose coated magnets.

Magnet fragility

Protect your eyes. Magnets can explode upon uncontrolled impact, ejecting shards into the air. We recommend safety glasses.

Keep away from computers

Intense magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Maintain a gap of at least 10 cm.

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

UMP 29x10 [M5] GW - search holder

Technical details - UMP 29x10 [M5] GW - search holder

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Sustainability

Pulling force

Field Strength

Other deals

MP 12x8/4x3 / N38 - ring magnet

SM 25x225 [2xM8] / N52 - magnetic separator

UMGGW 88x8.5 [M6] GW / N38 - magnetic holder rubber internal thread

BM 950x180x70 [4x M8] - magnetic beam

Strengths as well as weaknesses of neodymium magnets.

Benefits

Disadvantages

Lifting parameters

Maximum lifting capacity of the magnet – what affects it?

Lifting capacity in real conditions – factors

H&S for magnets

Precision electronics

This is not a toy

Thermal limits

Safe operation

Fire warning

Crushing force

Pacemakers

Allergic reactions

Magnet fragility

Keep away from computers

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C