The induction motor provides superior power for industrial grinding applications. Grinder has a rugged cast iron base and rests made of precision machined aluminum with rear exhaust ports in wheel guards and 12-1/2" distance between wheelsfor larger and longer grinding applications. Specs: 3,450 rpm no load speed, 6" wheel diameter, 1/2" spindle diameter, adjustable tool resets, length 15", weight 25.5 lbs. Includes: 36 & 60 grit wheel, eye shields, spark deflectors, tool rests and adjustment wrench.