4 inch Diamond Grinding Disc with Center Screw Hole - 9PCS Aggressive Concrete Grinding Plates Perfect for Floor Polishing Grit:Grit 120 3) Designed to work aggressively

3) Designed to work aggressively

Best used on hard surfaces

Product Name: Blastrac Trapezoid Diamond Grinding Shoes with Three Hexagonal Segments

Machine: Blastrac Concrete Floor Grinding Machine

Connection: Redi Lock Scanmaskin Connection

4 inch Diamond Grinding Disc with Center Screw Hole - 9PCS Aggressive Concrete Grinding Plates Perfect for Floor Polishing Grit:Grit 120 3) Designed to work aggressivelyProduct Description Diamond grinding discs are engineered with top grade industrial diamond powders for maximum grinding performance and superior lifespan. Our specially formulaed grinding segments increased durability and wheel life . These diamond wheels disc can be used for a wide of grinding concrete and other masonry products. Bond: Soft Bond, Medium Bond, Hard Bond Hard concrete requires softer bond to prevent glazing and to allow new diamonds