Features:Made of high quality Nylon PA66 material,durable in use.Exquisite appearance, sturdy, and dustproof.Professional manufacturing, high reliability.Easy and convenient to install.Anti-theft protection, high-end, fashion, high-quality materials, delicate craftsmanship.Suitable for all 21mm screws (car Wheel hub).Specifications:Condition: NewMaterial: Nylon PA66Color: Black Gray Red Yellow Blue Green Purple (optional)Front cap size: 25.8mmReverse inner diameter: 21mm,Side height: 24.5mmCap low root size: 17.2mmPackage Weight: Approx.88g/3.1ozFitment: for 21mm wheel screwsPackage List:20 * Hub cover1 * Nylon clip1Made of high quality Nylon PA66 material,durable in use.2Exquisite appearance, sturdy, and dustproof.3Professional manufacturing, high reliability.Easy and convenient to install.4Anti-theft protection, high-end, fashion, high-quality materials, delicate craftsmanship.5Suitable for all 21mm screws (car Wheel hub).