U-Polemag fishing magnet is made of A3 steel plate and coated with Nickel-Copper-Nickel to be the strongest type of permanent magnet , that concentrates the magnetic force to give this 250kg of pull force.
Unique design with Countersunk Hole and Eyebolt Great for salvaged of various iron-containning nickel material underwater.Powerful magnets paired with wear-resistant nylon braided ropes get you started right away. You must check each time before use, and try to avoid loose screws and magnets from holes and ropes lost in the river.
The ferrite pot magnets in this group have a countersunk borehole or an internal thread. They are made of ferrite and not neodymium. They have a lower adhesive force and are larger. But they are cheaper than neodymium magnets and can be used outdoors as well.

Magnetic Fishing Characteristics:
1.Compact and Lightweight
2.Strong powerful magnetic
3.Force permanent, long service life
4.Magnet difficult to break

About the application:

Good idea for magnet fishing, lifting, hanging, retrieving applications. Searching items like eyebolt, screws, hooks, fasteners and so on in your warehouse garage or yard. Treasure hunting in the river or sea.

Note:

1.Please keep away from children and items that may be sensitive to magnetic fields
2.Strong magnets should Keep away from Ironware and some easily magnetized iron products, such as monitors, bank cards, computers, televisions, mobile phones and other
3.Magnets might affect water meter ,electric meter, gas meter and some metering equipment exist some inaccurate affect (Such as : if magnets placed near the meter, the meter will slow down)

Packing Details : Packing, solid bicycle saddle, 50pcs/carton

Delivery Details : 3-30 days after order of Solid bicycle tire tubes