Replacement Piston Driver Blade Assembly for SENCO FinishPro 21LXP Nail Gun

Superior Parts SP EA0351 Aftermarket Piston Driver Assembly replaces Senco EA0351. This is a replacement 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. Guaranteed never to unscrew.

Features:

• Heat treated tool steel 6150 - Rockwell hardness 50-52
• Aerospace grade #2024 Aluminum piston
• Mechanically locked piston driver interface