Introducing the Aluminum Oxide Grinding Wheel by POWERTEC.60 Grit This 8” bench grinder wheel was designed to fit most stationary bench grinding machines for high speed steel sharpening and deburring.It features premium white aluminum oxide with a vitrified bond. As this abrasive grinds down with wear, it produces a consistent and fresh grinding surface for balanced work. Whether sharpening your metal lathe turning tools, lawnmower blades or other HSS tools – this grinding wheel stone will get the job done with high precision results. Commonly Used Applications Lawn mower blade sharpening tool Metal lathe tool sharpening Sharpening HSS drill bits Planer blade sharpener Chisel sharpening tool (It is not recommended that you grind wood, plastic or any other non-metallic material on a bench or pedestal grinder.)Dimensions and Specifications Diameter: 8”Thickness: 1”Arbor size: 5/8”Material: White Aluminum Oxide (Alundum)Bond: VitrifiedGrit Type: 60Maximum RPM: 3600POWERTEC is a leading manufacturer of high quality woodworking tools and accessories, machines, and an assortment of OEM replacement parts. We are committed to exceeding expectations, while bringing the latest innovations, technology, and product development to the industry.