ATOPLEE Polishing Stone, 6pcs Grit 3000# Ruby Whetstone Polishing Stone Oilstone Graver Sharpening Tool 6 Shapes,Square/Triangle/Semicircle/Cylindrical/Edge/Rectangle

【Material】Ruby whetstone is sintered at high temperature, with high hardness and strength .Not easy to wear ., 【Item size】001:Square Ruby Size: 100mm*8mm*8mm ;002:Triangle Ruby Size: 105mm*8mm*8mm*8mm;003:Semicircle Ruby Size: 100mm*8mm ;004:Cylindrical Ruby Size: 100mm*8mm;005:Edge Ruby Size: 100mm*8mm*5mm ;006:Rectangle Ruby Size: 100mm*10mm*6mm., 【Granularity】3000#., 【Package Included】6pcs Ruby Sharpening Grindstone., 【Usage】Suitable for processing high toughness hardened steel, alloy steel, precision measuring tools and instrument parts and other workpieces with high finish requirements .