Features: 1) Materials: AISI1010-86, AISI52100, AISI 304, 316L, 404, 4202) Grades: G40, G60, G100, G200, G500, G1000 3) Size: 2mm- 60mm4) Complies with the ISO3290, AFBMA, DIN, JIS standards5) Applied in all kinds of exactitude machines, hardware, bearings, wheel, bicyclesand trust bearing pulleysproducing area:China