The handiest personal blowguns on the market today. A must for home, shop or garage use. They're quick and easy to use, just twist knurled nozzle. Adjust from a whisper of air to a full volume flow. Nozzle meets OSHA regulation 100-1. Knurled nozzle makes handling easy. Complete with handy pocket clip. Attach to air line coupler; Fits all Industrial/Milton Design 1/4" coupler bodies.