About This SPECS: Measures 8" in diameter, 1-1/2" wide, with a 5/8" arbor hole fine 320 grit for precision sharpening and a smoother finish DURABLE MATERIALS: Constructed from a precision-machined 6061 aluminum body and fully coated with industrial-grade CBN (Cubic Boron Nitride) and nickel plating for enhanced wear and corrosion resistance PERFORMANCE: Experience increased grinding and high-speed steel sharpening productivity with minimal downtime due to less frequent wheel changes and reduced maintenance requirements. UPGRADE OVER AO WHEELS: Unlike traditional aluminum oxide wheels, this CBN wheel runs cooler, never needs dressing, retains its shape over time, and reducing the risk of heat-damage to tools VERSATILE APPLICATIONS: Perfect for sharpening high-speed steel (HSS) lathe tools, carbide-tipped scrapers, turning tools, chisels, and other woodworking or metalworking tools GRINDER COMPATIBILITY: Designed for use with most 8" bench grinders with 5/8" arbors. Best used on slower-speed grinders (approx. 1700??800 RPM) for optimal performance and extended wheel life Overview Grit Material : Cubic Boron Nitride Product Dimensions : 9.84"L x 2.24"W Brand : POWERTEC Compatible Devices : Bench Grinder Grit Type : Fine