⭕ Heres a complete AMI (Arc Machines) 307 Orbital Welding System. Manufacture date Apr, 2013. Its in new, pristine condition. It consists of the Model 307 power supply, Model M307-CW head chiller/cooler, and a Model 9-1500 head with .25 collets and 15 ft extension cables. The connectors still have plastic wrap on some of them. It was powered up for about 9 hours and had the head on it for 1.5hr. No welds, no saved weld schedules. No liquid has ever been in the chiller, and the head appears never to have been fired. No tungstens are included. The head can handle a maximum collet size of 1.5. Two (2) collets are required for welding-one on either side of the head. They can be the same size, or different for welding 2 different tube sizes. Delivery available.