material:AISI1005-1085,AISI52100,AISI304,316,420,440 specification:thorough hardened,super-fine surface size:1-25.4mm material:AISI1005-1085,AISI52100,AISI304,316,420,440specification:thorough hardened,super-fine surfacesize:1-25.4mmthe specifications of our products is:material:AISI1008-1015,AISI1055-1085,AISI52100,AISI420,420C,440,440C,304,316grade:10-1000dia:1.0-50.8mmHRC:58-65We also ...