Superior Parts SP EA0351 Aftermarket Piston Driver Assembly replaces Senco EA0351

This is a driver with O-Ring for the Senco FinishPro 21LXP Pin Nailer

This comes with a patent pending locking mechanism which will not allow the driver to unscrew from the piston

Aluminum is crimped into the Unilock grooves of the shaft to prevent unscrewing

to unscrew

Features: Heat treated tool steel 6150 - Rockwell hardness 50-52 Aerospace grade #2024 Aluminum piston Mechanically locked piston driver interface Compatible with: Senco FinishPro 21LXP Pin Nailer