... ,3/8,15/32,29/64,31/64,1/2,9/16,5/8,3/4 copper plated steel balls G10 G16 G100 G1000 ... /8,15/32,29/64,31/64,1/2,9/16,5/8,3/4 copper coated steel balls mild steel ball 1. Material: AISI1045-10852 ... /2" 1"4. Hardness: 58-62HRC5. Packing: Bag/Carton6. Brand :Ball king7.MOQ:1 Chemical :ItemC%Si%Mn%P%S%HardnessAISI ...