... G16 G100 G1000 AISI52100 chrome steel 1/16,3/32,1/8,5/32,3/16,7/32,1/4,5/16 copper coated ... to G10003. Size: 1/8" 5/32" 3/16" 5/16" 5/32" 7/32" 1/4" 3/8" -7/8" 1/2" 1"4. Hardness: 58 ... -62HRC5. Packing: Bag/Carton6. Brand :Ball king7.MOQ:1 Chemical :ItemC%Si ... .300.30~0.700.04Max0.04Max 1/16,3/32,1/8,5/32,3/16,7/32,1/4,5/16 copper plated ...