The Tow Bar Ball Cap is a universal protective cover designed to safeguard your trailer hitch ball from dust, moisture, and oil. Crafted from premium ABS plastic, it ensures durability and long-lasting performance. The built-in screw knob provides a secure fit, preventing the cover from slipping or loosening during travel. Perfect for trucks, RVs, semi-trailers, cars, and boats, this cover is both practical and reliable, making it an essential accessory for towing equipment. Main Features Durable Protection: Made of high-quality ABS plastic, resistant to water, dust, and oil. Secure Fit: Equipped with a screw knob to prevent loosening or accidental falling. Practical Replacement: Ideal for replacing old or worn-out trailer ball covers. Wide Application: Suitable for trucks, RVs, semi-trailers, cars, and boats. Long Service Life: Stable structure with reliable performance for extended use. Specifications Material: ABS Plastic Application: Protective cover for trailer hitch balls (universal fit) Function: Waterproof, dustproof, oilproof Fixing Method: Screw knob for secure attachment