Description
Aftermarket Hitachi Nailer Piston Driver. This is a generic replacement drivers with O-ring for the Hitachi NV83A4, NV83A5 nailers. This comes with a patent pending locking mechanism which will not allow the driver to unscrew from the piston. Aluminum is crimped into the unilok grooves of the shaft to prevent unscrewing. Guaranteed never to unscrew.