Robust Tightener: 0.28" powder coated with DEEAGLE hitch tightener plate to achieve better shock absorption and anti-cuts. Rubber-coated U-bolts for tougher bumps and poor weather. The whole item is built to last and rust-free. Practical and Functional: Reduce rattle and movement when towing. This item is of great help in extending the life of cars and trailers, as well as towing equipment. A noise-free and enjoyable trailer journey on the road. Universal Hitch Tightener: This tow clamp is compatible with most hitches classes I, II, III, and IV (1, 2, 3 and 4) locking 1.25" and 2" hitches. You can add it to your trailer truck SUV sedan RV camper van bike rack and minivan. Easy to Install: Insert the tube, lock them directly by U-bolt and plate. Fasten then with our spring washers, flat washers. Rotate the bolt to ensure the tightener is working. If the hitch is low, and there is a risk for U-Bolt to scrap ground, lock the tightener from the bottom. After-sales Service: ONE YEAR warranty and responsive 24/7 customer support. If you experience any issues, simply reach out via the "Ask a Question" button for assistance. We're committed to providing top-notch service.