... steall ball, chrome steel ball, stainlesssteel ball for bearing. Features: 1) Materials: AISI1010-86, AISI52100, AISI 304, 316L, 404, ... ISO3290, AFBMA, DIN, JIS standards5) Applied in all kinds of exactitude machines, hardware, bearings, wheel, bicyclesand trust bearing pulleys Bearing Ball chrme steel ball