For sale is a Peer Model AR-450 50KVA Rocker Arm Spot Welder, Serial No.770067. 3/60/220VAC Input. 3.4 - 6.4 Secondary voltage. 50KVA Output at 50 percent duty cycle. 28-1/2" Throat depth of rocker arms. 2-1/2" Diameter rocker arms. Electric foot switch. Technitron weld controls.