... .Hardness:HRC58-62 AISI1010,AISI1015,AISI1045,AISI1086 high precision Carbon Steel ball 1.Materials:(AISI E52100,100Cr6,SUJ2)+(100CrMn6,SUJ3 ... plastic paper in the pallet.(waterproof)(2),put the ball carton into the pallet ,and fix the pallet.(3 ... products are widely used in aviation industry,automobile industry,precision instrument,measuring appliance, motorcycle, bicycle,bearing,medical instrument ...