The Superior Parts SP EA0138 is a generic replacement Piston Driver with O-Ring that’s compatible with Senco FinishPro 41XP guns. Manufactured with our UNI-LOK technology that hydraulically crimps the grooves of the shaft to ensure the piston driver never unscrews. Drivers do not unscrew even at 80 N-M(59ft-lbs) during torque testing. The aluminum piston driver is heat treated to provide strength, durability and performance.
