... -50.8mm 4.Hardness:HRC58-62 AISI1010,AISI1015,AISI1045,AISI1086 high precision Carbon Steel ball 1.Materials:(AISI E52100,100Cr6,SUJ2)+(100CrMn6 ... pallet.(waterproof)(2),put the ball carton into the pallet ,and fix the pallet.(3),Hooping the pallet tightly using the ... industry,precision instrument,measuring appliance, motorcycle, bicycle,bearing,medical instrument and food machinery.