Features: Unique rotation locking mechanism, without any tool. Compared with the traditional filler caps, this design greatly improves the installation efficiency. High temperature resistant plastic construction features a tool less twist lock mechanism and integrated anti leak gasket for 40% longer service life compared to standard caps. Built in leakproof sealing rings minimizes the risk of oil leakage and ensures the normal operation of the engine. Optimizes routine engine maintenance and oil refills while protecting against dust contamination during urban commutes or garage storage. This design reduces the possibility of leakage by 30%, which is suitable for car owners who pay attention to safety and performances and avoids expensive maintenance costs caused by oil leakage. Specifications: Component:Plastic Diameter:Approx.68mm/2.68inch Color:Black High temperature resistance, corrosion resistance Part Number:11128654637 Practicality: Effectively prevent oil leakage, ensures normal operation of the engine, easy to install and disassemble Package Includes: 1pcs Engine Oil Filler Caps note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.