Aftermarket Max Nailer Piston Driver (US S7 Steel). Guaranteed never to unscrew. This comes with a patent pending locking mechanism which will not allow the driver to unscrew from the piston..
Aftermarket Max Nailer Piston Driver (US S7 Steel).Aftermarket Piston Driver Assembly without O-Ring for Max CN565S - US S7 Material Aluminum is crimped into the unilok grooves of the shaft to prevent unscrewing..