Superior Parts SP 885-519 Aftermarket Piston Driver for Hitachi NR90AE Replaces Hitachi 887-491, 885-519 & 885-918
Superior Parts SP 885-519 Aftermarket Piston Driver for Hitachi NR90AE Replaces Hitachi 887-491, 885-519 & 885-918. Aluminum is crimped into the unilok grooves of the shaft to prevent unscrewing. Hardened steel lock tite and micro-mechanically locked piston driver interface. Guaranteed never to unscrew.