PROFESSIONAL GRADE QUICK CHANGE DISCS ROLOC COMPATIBLE QUICK CHANGE DISCS TYPE R & TYPE S. LONG LASTING DESIGN Zirconia, Aluminum Oxide, and Ceramic Grain. Available in Surface Conditioning Discs and Flap Discs. QUICK CHANGE FLAP DISCS QUICK CHANGE CERAMIC FLAP DISCS TYPE R & S QUICK CHANGE ZIRCONIA FLAP DISCS TYPE R & S QUICK CHANGE SURFACE CONDITIONING DISCS COARSE GRADE QUICK CHANGE SURFACE CONDITIONING DISCS TYPE R, S & P, STANDARD & HEAVY DUTY, ALUMINUM OXIDE MEDIUM GRADE QUICK CHANGE SURFACE CONDITIONING DISCS TYPE R, S & P, STANDARD & HEAVY DUTY, ALUMINUM OXIDE COARSE GRADE QUICK CHANGE SURFACE CONDITIONING DISCS TYPE R, S & P, STANDARD DUTY, ALUMINUM OXIDE QUICK CHANGE CLEAN & STRIP-IT DISCS MAXIMUM PERFORMANCE QUICK CHANGE CLEAN & STRIP-IT DISCS SILICON CARBIDE, TYPE R & S ENHANCED PERFORMANCE QUICK CHANGE CLEAN & STRIP-IT DISCS SILICON CARBIDE, TYPE R & S STANDARD PERFORMANCE QUICK CHANGE CLEAN & STRIP-IT DISCS SILICON CARBIDE, TYPE R & S