1Application: The kit includes 15pcs adapters with different size to meet the needs of different models, fit German,Japanese, Korean, European cars. 2Quick Connection: Comes with a quick connector that one end connects to the adapter and the other end to the air hose, suitable for most brake fluid exchangers. 3Oil Leakage Prevention: Each adapter contains a seal design, so it can effectively prevent oil leakage. This not only decreases fuel consumption but also is safer. 4Aluminum Alloy: Brake bleeder adapter is made of high strength aluminum alloy material with anodic oxidation treatment, rustproof, more durable. 5Portable: All brake fluid bleeding adapters come in one box, easier for you to carry them, also protects the master cylinder adapter group from damage and loss.