Reliable venting with wear-resistant aluminum and a high-quality seal provides leak-free performance even during long-term use. Practical and versatile: designed for cars and motorcycles; fits a range of outlet sizes and works with adapters and extension hoses for expanded venting options. Backflow protection: one-way valve ensures thorough cleaning of hydraulic lines and prevents air backflow during brake fluid changes. Time-saving installation: integrated design with clear mounting steps enables smooth brake fluid changes without delays. Use scenarios: - Car brake fluid flushes: connect adapters and extension hoses to vent air efficiently and prevent air in the lines. - Motorcycle brake bleeding: compatible with different lever and caliper setups to reduce spills and ensure complete air removal. - Routine maintenance or storage: reliable venting protects the hydraulic system and speeds up servicing.