Don't let someone walk off with your trailer or your hitch-mounted gear! This Trailer Hitch Receiver Lock is a simple, tough way to secure your setup. It's built from strong, chrome-plated carbon steel to resist cutting and weathering. The clever dual-pin design gives you two pin diameters (1/2\ and 5/8\) with different lengths, making it compatible with almost all standard hitch receivers: the common 2-inch and 2-1/2-inch sizes, as well as the smaller 1-1/4-inch receivers. That means it fits Class I, II, III, IV, and V hitches on cars, trucks, SUVs, and RVs. Using it is a breeze: just insert the key and turn to unlock, slide the locking lever into your receiver tube, press the latch to lock it in place, and give it a tug to make sure it's secure. The lock head rotates 360 degrees for easy access, and it has a protective cap to keep dust, water, and grime out of the keyhole. It's perfect for locking your trailer coupler, or for securing hitch-mounted accessories like bike racks, cargo carriers, or tow balls. Get peace of mind for your next trip or while your vehicle is parked. Package includes one lock measuring about 3.5 x 2 x 0.6 inches. A small investment for big security!