neodymium countersunk ring magnets

Neodymium countersunk(countersink) ring magnets are disc-shape neodymium magnets with countersunk holes.We have a wide range of neodymium countersunk ring magnets for sale.The neodymium countersunk ring magnets on the picture are measured 20 mm in diameter and 5 mm in height, the countersunk holes  are suit for M-5  screw thread. We produce & supply high-quality neodymium countersunk(countersink) ring magnets at cheap price.