Make your tow vehicle and trailer more secure by keeping them locked up tight with a Curt hitch lock. Like a hitch pin and clip, a hitch lock is designed to insert into the fastener hole in the side of a receiver tube in order to hold a ball mount or hitch-mounted accessory in place. Curt hitch locks allow you to lock your ball mount into your trailer hitch, deterring theft and preventing anyone from detaching your trailer at the ball mount and towing away your property without your permission. Curt deadbolt hitch locks have a solid, square-shaped lock mechanism and a bent handle for easier gripping. For the ultimate towing security, a hitch lock and coupler lock used together will provide security at both the vehicle side and trailer side of your towing setup. For your boat, ATV, or camper, keep your toys more secure with Curt hitch locks.