ITEM NAME:12 Segs 4 inch Concrete Turb Diamond Grinding Cup Wheel Disc Masonry Stone T3L1 12 Segs 4 inch Concrete Turb Diamond Grinding Cup Wheel Disc Masonry Stone T3L1 Thicker wide gear and rivet welding creats a higher speed of grinding and a longer service life. Wheel features and air holes designed to help maintain a stable cutting pattern and reduced wear. Lightweight and vibration-free design greatly reduce operator fatigue. Suitable for grinding on marble, tile, concrete and rock. It can fit for the angle grinder of 100 and 125. Material:alloy Weight: 8oz/220g Size(diameter): 4 inch/100mm Hole Diameter: 0.87 inch/22mm Outside Saw disc diameter: 4.3 inch/11cm Hardness: 69 degree Fit for: 100 and 125 angle grinder Color:green Coating: yes packing:1 x diamond grinding Note: Light shooting 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.