Replacement Driver Piston for Hitachi NV75AG NV85AG Nailer Nail Gun

Replacement Driver Piston for Hitachi NV75AG NV85AG Nailer Nail Gun.

Hitachi Nailer Piston Driver. This is a generic replacement driver with o-ring for the Hitachi NV75AG, NV85AG coil / framing nail gun. 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:

• Japanese Carbide Blade - SKH-9
• Heat treated to Rockwell hardness 64-66
• Aerospace grade #2024 Aluminum piston
• Mechanically locked piston driver interface
• In field tests it lasts significantly longer than the US S7 steel