Silicon carbide abrasive material with high hardness is used.Clogging was prevented with the use of coarse abrasive grains (#24).Finishing the surface without deep cutting.Optimum for chipping of concrete, stone, glass, roof tile and part repair.Pre-processing of water pipe lining.Grain Size (#):24Outer Diameter x Blade Length x Hole Diameter (mm):100 x 25 x 16Max Working Rotation Speed (rpm):13600Blade Number (sheet):45Max Working Peripheral Velocity: 72m/s (4300m/min)Silicone Carbide AbrasiveIncluding 10 pieces per 15mm hole adapter box (separately sold item no. 5 pieces included: GPTAS-5P)