Features:100% brand new and high quality. Large grinding segments with heat-treated cup design. Diamond coating which provides higher durability and longer life. Delivers very fast cutting action on masonry, marble, tile, concrete, granite, ceramic, etc. Wheel with air holes design, to help and maintain stable and cool cutting pattern and reduced wear. Can be used for grinding and polishing wood, metal and mold. Specifications:: Material: Diamond Color: Gold Type: segmented grinding wheel Diameter: 150mm Inner hole diameter: 22mm Applications: Suitable for grinding marble, tile, concrete, rock, etc. Package included: 1pcs diamond segment grinding wheel