Shorter lengths of 3/8 in ID air line that moves the quick disconnect couplings away from the tool and exhaust assembly. The 1/4 in NPT fitting attaches directly to the Random Orbital Sander with Self-Generating or Central Vacuum.
A lubricating oil that keeps the tools running at top efficiency. The oil reduces the coefficient of friction between moving parts and reduces the amount of heat produced by the motor. Durable for air compressors.