... Sizes and Grade 2 High Precision 3 Fast delivery. Ceramic balls 1 Material: Ceramic & Plastic: Si3N4, ZrO, SiC, Glass, ... G40,G60 G100, G200, G500 or G10003 Size: 1/8 to 1 inches. 1mm to 150mm4 Hardness: Carbon steel: ... HRC40-50HRC, Chrome steel: HRC54 to 655 Package: 1 Poly bag+ Carton + Pallet 2 Steel Barrel + Pallet ... & Service: Samples available for the standard balls and OEM acceptable.