The Weldmart (Profax) spool gun is a direct connect gun for Miller CP power supplies with the standard 14 pin connector. The basic spool gun design has been on the market for over sixty-five five years. It will push wire for 0.025 the 1/16 wire and any alloy you can get on a standard 4" spool, no proprietary wire spools nobody stocks. Lead length is 50 feet.   Standard straight and 45' barrels are avaiable. We can provide special order barrels. You tells us what you need-your the customer!