#188VR Small Variable Rate Air Control Kit
#188VRX Small Deluxe Variable Rate Air Control Kit
#531RS 85 deg Pneumatic Main Retracts RoboStrut Ready
#531RSE 85 deg Electric Main Retracts RoboStrut Ready
#631RSE 85 deg Electric Main Retracts RoboStrut Ready
#670 1/2" dia Straight RoboStrut