22x6mm plastic coated magnets

Waterproof & rustproof magnets can be used outside or in humid environment. The best rustproof magnets are made with plastic coated,and the strongest rustproof magnets are made with neodymium(NdFeB).What you are looking at now  are round disc shaped neodymium magnets with plastic coated.The finished dimension is D 22 x 6 mm. The plastic coated neodymium discs are real rustproof & durable,and also have strong magnetic force on the round surface.You may view other rustproof plastic coated neodymium discs for selecting.