Package: 2pcs Sanding Discs, Sanding Disc Diameter: 125mm, Spindle Diameter: 22.23mm Segment Width: 5mm, 2pcs 20mm Spindle Adapters - Compatible with all angle grinders with M14 threaded spindle. Premium Material: Our 125mm diamond grinding wheel features premium diamond coating, which not only makes the machining process faster and easier, but also ensures unmatched durability. They can help you smooth out roughness and unevenness of your concrete surface. We believe these two wheels are more than enough for your daily home projects and DIY needs. Heat dissipation hole: The silent design of the heat dissipation hole can not only dissipate heat, but also reduce damage to the machine. SUPERIOR BALANCE: Our 125mm diamond blades are highly balanced to help prevent grinding vibration. Uses: Grinding wheels are generally used for grinding marble, granite, quartz, artificial stone, various ceramic products, as well as repairing and polishing cement, concrete and brick walls. They are also