Variable speed dial, all ball-bearing motor for long life, head swivels 360 degrees, cuts 7/32" strip which continuously curls out of cutting area for clear line of sight, cuts radius of 5-1/2" and larger. Specs: max watts out 470W, strokes/min 0-2,500 SPM, capacity in: (mild steel) 18 gauge (stainless steel) 20 gauge, replacement parts: left/right blade, center blade, 9.1" long, weighs 5.0 lbs.