Miller XR-Aluma-Pro35' MIG Gun is designed to be used with the XRcontrol or a Millermatic350P as part of a push-pull system. Water-cooled gun is sui for applications requiring current rating of 400 A and is ideal for sign manufacturing, typical aluminum manufacturing, shipbuilding, railroad maintenance, truck and trailer manufacturing. Gun helps to save time and money on service and maintenance while enhancing operator efficiency and increasing productivity. It has 3 3/4 turn potentiometer that offers good resolution when selecting the right wire speed for the job. Aluminum-series-specific tension setting provides smooth wire feeding performance with 4000 or 5000 series aluminum wires. Gun features recessed wire feed speed control that provides durability and is easy to use while wearing welding gloves. Easy-to-rotate, self-seating head tube gives good access into tight spots, preventing leaks and offering superior current transfer. Trigger hold of the gun minimizes fatigue by allowing operator to weld without holding trigger. XR-Aluma-Pro trigger has a wiping action to keep contact points clean for a more reliable electrical connection. It comes with replaceable feed cable liner for consistent arc performance. It also minimizes parts cost and service time by allowing a simple means of removing and replacing liner and not the complete feed cable. Gun features a full-length Velcro -seamed leather cover with integrated strain reliefs for effortless cable maintenance and protection. MIG gun has quick connectors between the control cable and electrical components such as trigger, motor and potentiometer. Head tubes are standard Roughneck , FasTipand are Bernard Centerfirecompatible.