YaeMarine 6pcs 3000 Ruby StoneWhetstone Sharpening Stone Polishing Stone Set Variety of Shapes for Sharpening Polishing

Features ? Ruby Sharpening stone is made from sintered crystals of synthetic ruby, extremely hard, could maintain their shape well and are resistant to wear; Applications ? Hard enough to sharpen and finish extremely hard metals such as carbide gravers, but also work on non-metal like glass, porcelain and quartz; ? For sharpening and polishing chilled steel,alloy steel and precision parts etc; ? Ruby Sharpening stones can sharpening and polishing for triangle sawtooth, circular saw blade, plane blade edge, small serrated mould; ? Great to use for knives, scissors, gravers, blades, shears, hooks, etc; ? Sharpening stone can use oil or water, the effect of OIL is BETTER than watter; Package Contents ? 1 × #3000 Square Ruby (100mm×8mm×8mm) ? 1 × #3000 Triangle Ruby (100mm×9mm×9mm×9mm) ? 1 × #3000 Semicircle Ruby(100mm×8mm) ? 1 × #3000 Cylindrical Ruby(100mm×8mm) ? 1 × #3000 Edge Ruby(100mm×5mm×9mm) ? 1 × #3000 Rectangle Ruby(100mm×10mm×5mm) Note ? Manual measurement, error 1-3cm, depending on the actual situation, please understand; ? You can get the most friendly customer service, please feel free to contact us if you encounter any problems during use, 90 days free return or refund.