Replacement seal kit for many 3-3/4" (3.7") ID Air Cylinders found on many Coats Tire Changers Fits the following Coats tire changers models: ---Table Top Clamping Cylinder on the following models (with any suffix: A, AX, E, or EX): 5030, 5040, 5045, 5050, 5060, 5065, 6050, 6060, 6065, 7050, 7060, 7065, 7660, 7665, RC-100 50X, 60X, 70X ---Clamping Cylinder on Coats GTS50, GTS60, and GTS70 Tire Changers. Does NOT fit the Clamping Cylinders on Coats APX Tire Changers. ---Tower Tilt Cylinder and the Horizontal Slide Cylinder on Coats APX80, APX90, GTS50, GTS60, and GTS70 models. ---Wheel Lift Cylinder on APX80 and APX90.