This trailer lock uses a unique wishbone design to evenly distribute pressure, which improves GTW and TW capabilities; the hook is made of aluminum-silicon-magnesium alloy, which is the same lightweight material used to make the space shuttle and has durability. Fixed steel 2-5/16 inch trailer ball with a capacity of 18,500 pounds and a 2-inch ball with a capacity of 8,000 pounds. Features: ? Strong and sturdy. Forging has better mechanical properties than casting and welding. High-end CNC manufacturing avoids cracks and other defects on OEDRO trailer hitches. ? Anti-theft function. There are two locks to fix the ball mounting platform and the hook respectively. Made of improved materials, the lock is more sturdy and durable! ? Red reflector. The red reflector can be used as a decoration or ornament for the trailer hook to improve the visibility on the road. ? Reinforcing ribs. The stiffeners on the hooks and the hollow structure on the ball mounting platform significantly improve GTW and TW capabilities. Specification: Brand: OEDRO. Color: Black. Receiver Size: 2.5 inches. Type: Receiver Hitch. Trailer Hitch Type: Adjustable Ball Mount. Placement on Vehicle: Rear. Package Included: Adjustable Ball Mountx1. Double Pin Key Waterproof Locksx2. The red reflectorx2. Warranty: Warranty: 2-Year.