ITEM NAME:Universal Trailer Parts Hitch Lock Ball Lock for Coupling Tow Caravan Zinc #SFD Product Description Description: Features: 1. Made of premium zinc-alloy material, fit for all popular trailer couplings. 2. The Ball Lock is an anti-theft locking device that expands and locks inside the coupling of your trailer, preventing the trailer from being connected to a Towball. 3. Keeps vehicle and trailer connected; helps prevent theft of the hitch. 4. Covered key slot prevents dust and corrosion in the locking mechanism. Specifications: Material: Zinc alloy Color: Silver Size: 65.5*50mm/2.58*1.97" Notes: 1. There may be slight size deviations due to manual measurement, different measuring methods and tools. 2. The picture may not show the actual color of the item because of different photographing light, angle and display monitor. Included: 1 X Ball Lock 1 X Allen Key 2 X Keys 1 X Manual.The Ball Lock is an anti-theft locking device that expands and locks inside the coupling of your trailer, preventing the trailer from being connected to a Towball. Made of premium zinc-alloy material, fit for all popular trailer couplings.