Production Description:
meterial :chrome steel or stainless steel.Tolerance: ABEC-1,ABEC-3models:623,624,625,626,627,628,629,6200,6201,6202,6203,6204,6205,6206,6207,6208,6209,6210,6211,6212,6213,6214All products have ZZ,2RS,Z,RS,N,NR, OPEN and so on.