Universal fit: this ball hitch cover has an inner diameter of 50 mm (1.96 inches) and is ideal for all standard trailer hitch balls of the same diameter.Keep your hitch dust and rust free High-quality materials: our trailer hitch cap is made of durable, corrosion-resistant and age-resistant PLA materials. It is waterproof, tear-resistant, for a long service life and maximum reliability Durable protection solutions: made from robust materials, our trailer hitch cover keeps dust and dirt out, providing reliable protection that significantly extends the life of your tow bar Easy installation: no additional tools required! Simply press the cap on the ball, installation is very easy and can be quickly removed. It sits firmly and stably on the drawbar without wobbling Function and glamour: the humorous gas mask helmet design makes this trailer hitch cover the ideal accessory that combines both style and practical functionality, show your personality on the road