General description Replacement fuel tank nozzle set (3 pieces - white) designed for petrol tanks, includes a tank vent cap, thick rubber seal, nozzle cap, and base cap. This set is compatible with most 1/2/5/10 gallon gas tanks. Technical specifications Internal thread size: between 1-3/4 and 1.7 inches (approx. 4.5 cm) Compatible with tank openings of 1.75 inches (approx. 4.5 cm) Material: High-quality HDPE Compatibility and accessories Includes two types of tank vent caps: Tank Vent Cap A: for tanks without a vent at the end Tank Vent Cap B: for tanks with a rear vent cover Installation For Tank Vent Cap A, simply drill and install. Usage After use, screw the nozzle cap back on to prevent leaks. The thickened rubber gasket ensures a tight fit and prevents fluid leakage during refueling. Other information Leak protection: No oil will leak out during transport or if the tank slides down. The nozzle tube and nozzle cap are threaded, featuring a rubber sealing ring inside the nozzle