Servicing your vacuum operated components and hydraulic systems has never been easier. The Powerbuilt 21piece Vacuum Pump Kit is an essential tool for checking vacuum-operated automotive components, bleeding air from hydraulic systems, and siphoning fluids. This multi-purpose pump creates both pressure and vacuum. Includes integrated vacuum/pressure release mechanism. The kit also includes an assortment of adapters, a roll of plastic tubing, and 2 fluid reservoirs making it easy to connect the pump to various automobile components. Once connected, the integrated dual scale vacuum/pressure gauge tells you when the proper amount of vacuum has been reached. The Kit includes a heavy-duty carry case with usage photos and detailed instructions.