The moving head option on the 2.5-in (6.4-cm) and 3-in (7.6-cm) piercing tools help improve accuracy and help productivity on high production jobsites. Maintains productivity and accuracy. Oiler assemblies feature a quick-reverse swivel kit for air-on reversing, a sight glass to see oil levels and a pressure relief cap. Allows operator efficiency. Proven design of the positive-turn reverse coupled with a heat-treated alloy steel tube body has minimal moving parts. Delivering maximum reliability and extended tool life. Wear rings on pistons that help extend tool life and maximize tool performance. Tailbolt system provides ease of access for tool maintenance, requiring a maximum of only 35 ft-lb (47.5 Nm) of torque. Ease of access and maintenance.