For 2" x 2" Class 3 and 4 receiver hitch AND surge brake style coupler requiring a 3-3/8" opening. One hitch lock and one coupler lock KEYED ALIKE for your convenience. Now you can lock your hitch and trailer with ONE key. Six pairings to. All DeadBolt locks utilize hi-tech materials and state of the art engineering to bring the ultimate in performance, valve and style. * All Weather Grips for easier handling in cold, wet, or high temperature weather. * Weatherproof lock cylinder for trouble free use. * Strong, reversible automotive style key is easy to insert and remove .even with gloves on. Fits comfortably on your key ring. * Double chrome plate provides automotive grade durability and corrosion resistance. * Strong, tough one piece machined carbon steel pin. * Non-skid grips provides comfortable grip even in cold, wet weather. * Patented screw and lock security. Rugged, pick proof threaded connection that would not false lock. * Keyed alike. No problem. Two keys covered under US patents 4,711,106 and 5,284,038.
