Operates on 100 psi air pressure; crimp lugs on wires/cables from 16 through 4/0 for pin/socket contacts, 22-18 through 1/0 for insulated solderlessterminals, 22/18 through 2/0 for non-insulated solderless terminals; portable, weighs 19 lbs; 12-3/4 in. Long by 4in. O.D.