11/32,3/8,15/32,29/64,31/64,1/2,9/16,5/8,3/4 copper plated steel balls G10 G16 ... G100 G1000 1/16,3/32,1/8,5 ... /32,3/16,7/32,1/4,5/16 11/32,3/8,15/32,29/64,31/64,1 ... /2,9/16,5/8,3/4 copper coated steel ... balls mild steel ball 1. Material: AISI1045- ...