1.Cast Steel Grit G12,size,2.0mm 2.Alloy steel material 3.ISO9001 ,SAE 4.Durability 3000times 5.Hardness,41-63HRC Cast Steel Grit1. Steel grit : G10/G12/G14/G16/G18/G25/G40/G50/G80/G120/ etc2.Diagram 2.5mm/2.0mm/1.7mm/1.4mm/1.2mm/1.0mm/0.7mm/0.4mm/0.3mm/0.2mm3.Made of quality steel shot reach to SAE, ISO9001.4. The production include some chemical C 0.85-1.20%, Mn 0.60-1.20%, Si 0.40-1.20%, S<0. ...