Need to service your Tire Changer's Robo-Arm Cylinder? Get the Coats 8184492 Robo-Arm 2in Cylinder Seal Kit. This kit is a must-have for repairing the old-style 2 inch Cylinder, ensuring smooth operation of your Coats Tire Changer's Helper Arm (Robo-Arm). It's an essential rebuild kit designed specifically for this task, making the repair job straightforward and efficient for mechanics and professionals alike.