Features： 1、Reduce Wear: Concrete wheel of the angle grinder has air holes to help maintain and cool the cutting pattern and reduce wear 2、Time Saving: Can be cut quickly on masonry, stone and concrete, very effective, efficient and time saving 3、High Diamond Concentration: High diamond concentration, can extend the service life and strong material removal, to achieve faster cutting 4、Increase Durability: Large grinding section and heat treated steel body, which can increase durability and wheel life 5、Application: Used for dry and wet grinding of concrete, granite, stone, marble, ceramic tiles, masonry and other building materials to glazed uneven surfaces and remove flicker Specification： Item Type: Diamond Cup Grinding Wheel Material: Diamond Uses: Used for polishing granite, cement, marble, rock, masonry, granite, and concrete on the angle grinder Colour: Yellow Inner Diameter: Approx. 22.23mm / 0.88mm Applicable Inner Diameter: Approx. 16mm / 0.63in, 20mm / 0.80in (Use washer) Package List： 1 x Concrete Grinding Wheel 2 x Washer