This compressed Vac Blow Gun uses the venture and vortex principle to amplify the air flow. It has no moving parts and works from compressed air only. The deep hole gun is a special version for cleaning blind holes. The blow gun is a powerful compressed air operated vacuum cleaner, blow gun and a transfer tool that too all in one. Not only that it consumes far less compressed air, in fact Vac Blow Gun amplifies air upto 7 times the inlet compressed air.