Features 1. Function: Hook tightener is designed to eliminate hitch noise, wobble, and rattle from cargo carriers, hitch receivers, trailer ball mounts, bike racks, and hitch racks. 2. Compatibility: Anti-rattle stabilizer fits 1.25-inch and 2-inch hitches; easily installs with Class I, II, III, or IV (1, 2, 3, or 4) hitches; not suitable for 2.5-inch or larger hitches. 3. Premium Material: Trailer hitch tightener is constructed from 304 stainless steel with powder-coated treatment for high strength, rust resistance, and long-term durability. 4. Package Contents: Includes a heavy-duty U-bolt, tensioner plate, spring lock washers, and flat washers to ensure secure and stable installation. 5. Application: Anti-rattle hitch tightener is compatible with a variety of vehicles, ideal for use on trucks, SUVs, vans, RVs, and trailers. Specification Item Type: Hitch Tightener Material: 304 Stainless Steel Usage: For 1.25-inch and 2-inch hitch Application: Trailer, RV, SUV, camper Package List 1 x Tensioner Plate 1 x U Bolt 2 x Nut 4 x Gasket