●Capacity: 34 oz., Adapter sizes: 21 to 30mm, 24 to 32mm, 28 to 37mm and 32 to 41mm ●Air requirement: 90 to 120 PSI, Air inlet: 1/4''- 18 NPT ●Shipping Weight: 1.90 lbs 1. Convenient one-person operation 2. Flush and refill entire brake system 3. Use only DOT certified brake fluid