Magnet-equipped and screw mounting types are parts used for fastening things to circular or square objects. Many types are available, such as hex head bolts, adjustment screws and male thread types. This type consists of screws made from a material such as iron or stainless steel, which are also equipped with a magnet. A common type is made from a neodymium magnet material with an electroless nickel plated surface. A neodymium magnet is a type of rare-earth with a strong magnetic force. The electroless nickel plated surface results in excellent sliding properties and abrasion resistance.