For heavy use grinding and polishing of small glass pieces, lamp worked pieces, or other material. For use with our diamond plated disks. Specifications: •12 inch solid steel head is mounted on magnetic center hub and is flush all the way across to allow uninterrupted grinding across the wheel head. • Variable speed 1/3 HP motor from 400 to 1,100 RPM. • Brush style splash guard allows work to easily pass through while preventing water overspray • Can be connected to direct water supply with minimal effort. • Shipping weight is approx, 58 pounds.