1. The unit creates a powerful vacuum that is used to bleed and flush hydraulic brakes and clutches. 2. Large, stable base so it won't tip, requires no special adaptors. 3. Automatic refilling of the master cylinder reservoir while bleeding. 4. Universal drain valve fits to most standard recycling system. 5. Specifications: - Air Supply: 70-170psi - Air Consumption:5.0 cfm - Refilled Bottle: 1.0 L - Inlet Size: 1/4" BSP - Extracting Tank Capacity: 2.0 L