I no longer use this shear and had picked it up for copper and pewter metal spinning crafts. This is the description online:
The May Tool MTC-42DV3/4 is a heavy-duty, American-made motorized circle shear (16-14 gauge capacity) with a 3/4 HP, 110V variable speed motor designed to cut circles from 3-1/2" to 42" in diameter. Key specs include 2-inch tool steel shears, a 10-inch head throat, 30-inch tail throat, and approx. 400-450 lbs weight.