Features: 1. Incredibly powerful due to high grade neodymium magnet N45 and steel shell 2. Prevent the naked magnet from scratching and chipping because of steel cup. 3. With a removable eyebolt M6 for easy salvage application 4. Multi-Use: Ideal for magnet fishing, lifting, hanging and Retrieving application Material: Strong Neodymium Magnet A3 Steel 304 Ring Magnet Coating: Ni Cu Ni Magnet Pulling Force: 18kg (D32 )/ 41kg (D42) Package includes: 1* magnet, 1*4mm rope (optional) Note: Strong magnet, Please keep away from children, use it carefully