At BikeMaster, they understand the quality and performance that motorcycle owners demand. They also understand that quality should be affordable. Not just for professional riders and mechanics, but for the everyday rider / mechanic as well. That is why BikeMaster continues to bring that level of quality and performance to all riders with their complete line of tools, parts and accessories at affordable prices. Quick and easy way to bleed those stubborn brake lines. Takes less time to extract air bubbles from the brake system. Catch bottle has 1 liter capacity. Dual attachment allows you to bleed dual disc applications. A must have for the tool box. Note: An air compressor is required to operate tool.