Aftermarket Hitachi Coil Nailer Piston Driver. This is a generic replacement driver with an o-ring for the Hitachi NV65AH / NV65AH2 coil nail guns. This driver comes with O-ring (880-311) but does not include the plastic piston ring (878-691). This piston ring goes on top of the undersized o-ring. 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.

FEATURES:

• Heat-treated tool steel 6150 - Rockwell hardness 50-52

• Aerospace grade #2024 Aluminum piston

• Mechanically locked piston driver interface
   

Compatible with:

Hitachi

NV65AH Coil Siding Nailer
NV65AH2 2-1/2" Coil Siding Nailer