Main function: Designed to remove adhesives, thin coatings, and uneven spots or seams. Grinding pad shape: The trapezoid is a very aggressive fan shape that easily adheres to the fan plate. Polishing effect: Easy to handle various rough surfaces. edges without damage, low grinding resistance, and high grinding efficiency. Widely used: an effective concrete/cement/paint ground grinding tool that can quickly and smoothly grind, remove protrusions, and make the surface flat. Specification: fan-shaped 3-tooth tooth Grit: 30 Thickness: 16mm / 0.6in Inner diameter: 9mm / 0.4in Colour:red Material:Metal Package Contents: 5 x concrete floor grinder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.