Features: 1.Contains O-Rings inside to provide good tightness and prevent fuel leaks under pressure. 2.Quality Plastic material suitable for fuel, gas and other common fluid types, it is durable, long life for use. 3.Fuel Line Quick Connector can resist cracking and deformation from fuel exposure and engine heat. Specification: Hose Inside Diameter: 10mm(25/64") O-ring Inside Diameter: 9.89mm(25/64") Barb Outside Diameter: 12.9mm(33/64") Color: Black, Gray Material: Plastic Easy to Install:You only need to align the male and female connectors and press them together firmly, and no tools are required to successfully install them.Note:To avoid incompatibility, please check the model and size of your fuel pipe joint before placing an order.Packing Includes:2 Pcs Fuel Line Quick Connector