The Weldmart (Profax) spool gun is a direct-connect gun for the Millermatic 252 machine. 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. The gun comes standard with 50 feet of lead; longer leads are available. The price includes a 14-pin to 10-pin adapter for Miller machines. Standard straight and 45' barrels are available. We can provide special-order barrels. You tell us what you need, you're the customer!