... ,2,BUL-SH3,BUW-SH2,DH-6,DH-10,DM-13,DW-24,DW-30,LUh3b,LU-DN,LUh-DH,2 ... the appearance point of view: chamfer decent product, appropriate structure standard specifications, the wire’s cross-section and length, not loose ... ring quickly form a uniform, moderate and stable oxide film.Non-standard brush can be designed and be manufactured per buyer's ...