Brand Name: Other Application: Industrial Magnet Type: Permanent With Holes: Yes Shape: Round Composite: NdFeB Magnet Model Number: Neodymium Magnet Certification: CE Certification: FCC Certification: GMP Certification: RoHS Certification: weee N52 Super Strong Neodymium Fishing Magnets Hooks Salvage Magnets Neodymium Magnet Searcher Powerful Neodymium Magnet for Fishing About this product SUPER POWERFUL - This magnets is 8/10/1216/20/25/32/36/40/42 /46/48/60/75mm in diameter, adopt strong neodymium magnet for its base. It can offer strong pulling strength under ideal condition. HIGH QUALITY - The powerful magnetic force is only concentrated at the bottom, The other three sides are Protected by steel cups that almost no magnetic force and magnetic force equivalent to 10 times the volume of the same magnet. force permanent, long service life.  BEST COATING - Ni+Cu+Ni Triple Layer Coated. The Best Coating Available, which Provides a Shiny and Rust Resistant Coated steel cup provides protection for the magnet and helps to prevent chipping or cracking. MULTI USE - Unique design with Countersunk Hole and Eyebolt Great for salvaged of various iron-containning nickel material underwater and Good idea for magnet fishing, lifting, hanging, retrieving applications. Have fun to searching items like eyebolt, screws, hooks, fasteners and so on in your warehouse garage or yard. PERMANENT STRENGTH - Neodymium is a kind of rare earth metal, it's suitable for making permanent & powerful magnets. This magnet has permanent magnetism, it will be the same powerful even decades after. specification: 1. Shape: round 2. Material: NdFeB magnet + A3 steel + 304 stainless steel 3. Color: silver 4. Maximum vertical tension D16mm: 4KG/10LBS D20mm: 9KG/19LBS D25mm: 19KG/41LBS D32mm: 32KG/70LBS D36mm: 41KG/90LBS D42mm: 61KG/134LBS ... 5. Maximum working temperature: 80& 8451; Package Included: 1 x Magnetic Hooks