Softer formulation for faster cutting high grain concentration for aggressive cutting action and smoother running wheels 2 full sheets of thicker fiberglass to withstand extreme applications and hold up to high speeds product overviewbacked by 2 full sheets of fiberglass to withstand dewalt type, Extreme use 1 metal cutting high speed wheels feature a high grain concentration for aggressive cutting and smooth, Running wheels. A soft formulation delivers fast cuts. Crafted for a selection of metal, Cutting applications. Additional features high grain concentration for aggressive cutting action and smoother running wheels 2 full sheets of thicker fiberglass to withstand extreme applications and hold up to high speeds