Features: 1Protective Function: The vent cap can prevent dust and moisture from contaminating the joint, avoiding causing damage and extending the service life of the nozzle attachment. 2Wide Applications: The fitting cap is suitable for most vehicle, motorcycle, truck and industrial machinery applications, stable and reliable. 3Durable Material: The fitting cap cover is made of solid and rugged material, wear resistant and dustproof, having a long service time. 4Perfect Fitness: The replacement cap uses the delicate technology design to match all specifications of the vehicle, can fit your car better. 5Easy to Install: The screw cap has a simple installation, convenient and time saving, don't need too much tools or specialized knowledge. Package included: 20 x M10 30 x M8 30 x M6 1 x Storage Box