Pneumatic Brake Fluid Bleeder w/ 4 Master Cylinder Adapters 90 - 120 PSI Brake fluid bleeder works with your air compressor to quickly assist in your brake bleeding! Flush and refill the entire brake system by yourself with this brake fluid bleeder. 34 oz Waster Brake Fluid Tank 24 oz New Fluid tank that inserts into your master cylinder with provided adapters Air requirement: 90 to 120 PSI, Air inlet: 1/4''- 18 NPT