Designed for tire re-capping and tire buffing. Air Fittings/Couplers. Low air consumption. Air Inlet (in.). NPT/BSP: 1/4. About JB Tools. 3M 20325 Random Orbital Sander, 6" Non-Vacuum 3/16" Orbit. 3M 16615 Accuspray Atomizing Head for Spray Guns (Blue, 1.2 mm, 4 per Kit).