Description The concrete and masonry cutting and grinding head cuts and grinds concrete and all other masonry products. It features 3 full sheets of fiberglass for durability and safety. It utilizes 100% virgin grain for enhanced removal and a long life of use. DEWALT incorporates a proprietary material mix to ensure a premium performance. Every concrete and masonry cutting and grinding features 100% inspected premium resin bonds before its use.Durability and safety from 3 full sheets of fiberglassUse of 100% virgin grain for enhanced removal and long lifeProprietary material mix to ensure premium performancePremium resin bonds 100% inspected before useDiameter: 4 In.