Aftermarket Piston Driver without O-Ring for Bostitch N89C, N89C-1P, N89C-HQ Framing Nailer, Superior Parts, Mfr#: SP 163816

Aftermarket Bostitch Nailer Piston Driver. This is a generic replacement driver without O-Ring for the Bostitch N89C, N89C-1P, N89C-HQ Framing Nailers. 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. This Piston Driver comes without O-Ring.