MATERIAL & SPECS: 8" diameter x 1" width, 320 grit CBN (cubic boron nitride) grinding wheel with 5/8" arbor; 6061 aluminum body fully plated with nickel for exceptional corrosion and wear resistance, ideal for bench grinders FEATURES: CBN, the world's second-hardest material after diamond, possesses more advantages and delivers consistent sharpness, high precision metal grinding, and a long lifespan, outperforming traditional grinding wheel abrasives. PERFORMANCE: Experience increased grinding and high-speed steel sharpening productivity with minimal downtime due to less frequent wheel changes and reduced maintenance requirements. COMPATIBILITY: Designed to fit most standard 8-inch bench grinders and operate optimally at 1700~1800 RPM, ensuring grinding and polishing versatility in your workshop VERSATILITY: Ideal for sharpening and shaping a wide range of woodturning tools, hard materials, including carbon steel, HSS, steel tools, and hardened steel. The wheel grinds cool with less stock removal, and the excellent thermal conductivity prevents workpiece damage caused by heat buildup and the life of turning tools is extended.