IN-LINE TOOL OILER
Prevents Burn-out . Stops rust and increases torque up to 25\% of pneumatic tools. Fastens directly to the air tool. Meters oil to the tool only when in use. 1/4" Male NPT outlet, 1/4" Female NPT inlet. Use on 3/8" and 1/2" air impact guns, wrenches and other air tools.