General: The inner diameter of the wheel nut cap is 17mm, which is suitable for most car hex nuts. And the bolt cover is dustproof and can also decorate car tires. Durable: These wheel nut covers are made of high quality plastic materials, which are strong and durable, and can be used for a long time to protect the wheel bolts. Easy to use: simply press the nut cap directly onto the bolt. And the package includes 20 sets of tire screws. A black plastic clip is also included to remove the nut cap. The fit is very tight and will not fall off easily when riding. They can be carefully removed and replaced. The nut cap has anti-rust function to prevent the screw from rusting. Make the wheel look different. Start with a screw and take care of your car. Specifications: Material: Plastic Color: Silver Inside diameter: 17 mm Total weight of items: 60g Package includes: 20 wheel nuts 1 black clip Reminder: Please check if the size is right for you before to buy. THANKS.