. Includes: 1 hitch lock, 1 trailer lock; both keyed alike . RH3 hitch lock fits class 3 & 4 (2" x 2") receiver style hitches requiring a 5/8" hitch pin . RC2 trailer lock (#072-30) fits level style coupler requiring a 1/4" pin with a 1/2" span . Pick-proof patented "screw-and-lock security" . Double chrome plated . Includes 2 keys . Carded