1/16,3/32,1/8,5/32,3/16,7/32,1/4,5/16 copper plated steel balls G10 G16 G100 G1000 AISI52100 chrome steel 1/16,3 ... /32,1/8,5/32,3/16,7/32,1/4,5/16 copper coated steel balls mild ... ~0.880.10~0.300.30~0.700.04Max0.04Max 1/16,3/32,1/8,5/32,3/16,7/32,1/4,5/16 copper plated ...