http://www.contractorsdirect.com/Concrete-Saw-Tile-Saw/Edco-Surface-Grinders - Buy Edco Grinders hereOriginally developed and continuously improved by EDCO, concrete floor grinders use horizontally rotating discs to level, smooth or clean the top surface of a concrete slab. EDCO grinders come with a multi-accessory disc that can be loaded with EDCO\'s long-lasting dyma-serts, strip-serts, grindingstones or scarifier assembly to remove rough finishes, flatten uneven areas or clean concrete slabs of sealers, paints or mastics. Grinders can also be used effectively to level uneven joints or high spots of 1/16 to 1/8 inch. Grinding with EDCO single, dual, four or turbo grinders provides contractors with a smoother finish than scarifiers or scabblers. Concrete, Crack, EDCO, Random, Saw