superior parts sp 885-917 aftermarket piston driver for hitachi nr90ad / nr90adpr nailer – 884-957

aftermarket hitachi nailer piston driver. this is a generic replacement driver with o-ring for the hitachi nr90ad and nr90adpr strip nail guns. this comes with a patent-pending locking mechanism which will not allow the driver to unscrew from the piston. aluminum is crimped into the unlock grooves of the shaft to prevent unscrewing.
SKU:ADIB00MZJ6KS0Superior Parts SP 885-917 Aftermarket Piston Driver for Hitachi NR90AD / NR90ADPR Nailer – 884-957 by Superior Parts