1. Material: ABS plastic 2. Universal 50MM trailer traction ball cap 3. Function: waterproof, dustproof, oily, etc. 4. Features: with screw twist to prevent loosening and falling, the product is a conventional upgrade in the market 5. Scope of application: traction ball protective covers for trucks, trucks, semi-trailers, cars, ships, etc. 6. Note: Please ensure the size of your trailer towing ball, the size of this product is suitable for 50MM trailer ball
