High-Quality Conditioning Disc – When attached to a right angle grinder or a die grinder, this surface disc works perfectly for final cleaning and finishing 50 Pack of Discs – Never worry about having enough discs on hand to complete the job and to start the next job when you purchase this kit Coarse Grit Rating – With the tough coarse grit of the Star-Brite disc, you can use it for deburring, rust removal, gasket removal and more Quick-Change Backing – Use the twist-to-lock backing to make a quick change to the disc, as it is compatible with all 3M holders, as well as many other twist locking styles from other manufacturers Assembled in America – Count on the quality of manufacturing you’ll receive with this conditioning disc, as we only use the best materials