CURT Trailer Lock Set for 2-Inch Receiver, 7/8-Inch Coupler Latch Span Model 23526CURT Trailer Lock Set for 2 Inch Receiver, 7 8 Inch Coupler Latch Span Model 23526 Make your tow vehicle and trailer more secure by keeping them locked up tight with a CURT hitch lock and coupler 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. While a CURT hitch p in does offer sufficient strength for keeping