1) Cast Steel Grit 2) For surface cleaning, rust removal, peening, finishing 3) High quality 4) Long durability 5) ISO 9001 Product Introduction(ISO9001)BOSUN cast steel grit is professionally manufactured by Shanghai Bosun Abrasive Co., Ltd in china mainland, with 23 years' experince in abrasive field.Size:G10,G12,G14,G16,G18,G20,G25,G40,G80,G120Hardness:42-64HRCDensity:7.6g/cm3UsageSurface ...