The bROK anti-rattle hitch clamp clamps onto the 2-in ball mount to produce quiet towing of your trailer. NOTE: Always use hitch pin. Anti-rattle device does not eliminate the need for hitch pin. Reduce rattle and movement for hitch tray, cargo carrier, bike rack, trailer ball mount helps to decrease noise and give you a quieter ride when towing Dampens 2-in hitches from rattling; compatible with most hitches classes III, and IV; suitable for trailer truck, SUV, sedan, van and minivan Easy to install with just two nuts and lock washers; after insert the tube, simply locate u-bolt onto ball mount and place plate onto receiver tube and tighten nuts If the hitch is low, and there is a risk for U-Bolt to scrape ground, lock with nuts to the top Color/Finish Family: Black Receiver Opening Size (Inches): 2 Weight Capacity (lbs.): 6000 Automotive Accessory Category: Truck Installation Instructions Included: No Installation Time: 5 Material: Steel Package Contents: 2-in U-Shackle Bolt, Clamp Bracket, 2 Nuts, 2 Lock washers, Instructions Required Installation Equipment: Wrench for nuts Brand/Model Compatibility: bROK CA Residents: Prop 65 Warning(s): Yes Warranty: 1-year limited UNSPSC: 25181700