1. OneWay Check Valve for Pressure Operation With an integrated twoway valve, it allows brake fluid to flow in only one direction, preventing air from flowing back into your brake or clutch system during bleeding. 2. Durable Aluminum Construction and Soft Hose This brake bleeder hose features a corrosionresistant aluminum housing and a flexible, transparent tube, designed to withstand frequent use and contact with brake fluid without deterioration. 3. Quick and Secure Attachment Equipped with sturdy metal clips, the hose easily attaches to brake bleeder nipples, ensuring a secure and leak connection for a clean and simple bleeding process. 4. Efficient Brake and Clutch Fluid Bleeding This tool is designed for use with DOT 4 or other common brake fluids, enabling quick oneperson bleeding of hydraulic systems without backflow or fluid loss.