Reinforced Depressed abrasives Grinding Wheel is produced by the advanced Japan technologies, imported resin, best abrasives Reinforced Depressed Abrasives Grinding WheelTYPE27&TYPE42MATERIAL TYPEAPPLICATIONABRASIVEHARDNESSNormal SteelDe-burr, rough grindBrown A/ON. P. Q. R. SStainless SteelDe-burr, rough grindWhite A/ON. PCast IronDe-burr, rough grindWhite & Brown A/ON. PDuctileDe-burr, rough ...