Plews 41-101 In-Line Tool Oiler

Compact oiler that fastens directly to the air tool. Precisely meters proper amount of oil to the tool only when the tool is in use. NO adjustments necessary 1/4" male NPT outlet, 1/4" female NPT inlet. Use on all 3/8" and 1/2" air impact guns, air wrenches, body shop air tools and pneumatic hammers.