1、Smart Sanding: The diamond sanding piece will not separate from the sponge, which ensures no residue and good polishing effects. 2、Broad Utility: Enables broad application on glass, granite, concrete, marble, terrazzo, travertine, engineered stone and so on. 3、Better Design: Electroplated diamond piece is very incisive and reliable, while the sponge allows for more convenient operation. 4、Good Material: Combining 120 grit diamond sanding piece with sponge, you can easily replace the polishing part for repeated use. 5、Easy Carrying: Designed to have a light weight and a compact size as well, both the daily storage and carrying are very simple. 1 x Sponge4 x Diamond Polishing Piece Item Type: Diamond Hand Polishing PadMaterial: Diamond, sponge. Polishing Pad Grit: 120 GritSponge Size: Approx. 96 x 60 x 30mm / 3.78 x 2.36 x 1.18in