Replacement Concrete Floor Diamond Grinding Blocks for Edco, Stow and General Equipment Floor Grinders, 3 Pack - EDCO3 5 diamond segments per block for longevity and the most square foot per $ investment 24/30 grit for aggressive grind Spring loaded diamond segments conform to inconsistencies on surface being ground Perfect for grinding and prepping surfaces for staining, sealing, and tile setting applications 3 neoprene wedges included which outlast wood wedges 100 to 1