Apex HP32 1/2" Key-Locking Pin for 1-1/4" Class I/II Hitch Receivers Deters theft of hitch receivers and accessories by locking items at the hitch pin Includes (2) keys 2-7/8" Barbell slides through the 1/2" hole and is locked from the opposite side Rubber cap seals out keyhole area moisture Zinc plated steel for 1-1/4" Class I/II Hitch Receivers, greasing is recommended to prolong lifetime; (not compatible with Toyota hitches)