3 inch resin bond concrete, terrazzo, granite, and marble polishing pad with foam interlayer 0.4"/10 mm working thickness for grinders with more than >15 lbs of grinding pressure per polishing pad, overall product thickness 15mm. Wet/dry polishing pad designed to achieve the ultimate shine and longevity. Wet polishing will haver longer life. Pack of 3 pcs. Last step of polishing for concrete, terrazzo, granite and marble floor. Made of premium quality resin and professional grade diamond powder. Availabe in grit #50, #100, #200, #400, #800, #1500, #3000. 3 inch copper bond also available in Actintool store, effective at removing scratches left by metal bonds, last longer and work more aggressive than resin bonds. 3 inch resin bond floor polishing pad fit with floor grinding machine for the polishing of concrete, terrazzo and natural stone floor.