steel balls steel ball, stainless steel ball ,carbon steel ball,chrome steel ball steel balls steel ball, stainless steel ball ,carbon steel ball,chrome steel ball1. chrom steel ball ... duty and high-speed bearing,linear motion guidance system(ex.ball screw),metal milling,ink and paint ... .833g/cm3 Grade : 5~millingSize :0.5mm~1"2.Stainless Steel BallMaterials: SS440C, SS420, SS316, SS304; AISI440C, 420, ...