Brown Fused Alumina, Abrasive Wheels, Resin Grinding Wheels manufacturer / supplier in China, offering Soft Oilstone, 80X50X20mm, 60#, 120#, 240# Manual Polishing Blocks., Flexible Oilstone 80X50X20mm Manual Grinding Grit 120# 240# Silicon Carbide Abrasive, Metallographic Cut-off Wheel 12"X1/12"X1" Wa80 60m/S Suitable for Cutting Hardness: 62-68 HRC and so on.