Gently used glass grinder for stained glass work • Perfect grinder for the occasional glass artist, student or classroom. • Convenient and compact size. • Motor: 0.67 amp. Motor speed: 3000 rpm. • Work surface: 6.75" by 6.75". Base: 7.75" by 7.75". Base Height: 6.25" • Weight: 6 lbs. Water Feed: Sponge. • Shaft Diameter: 5/16".