One hitch lock and one coupler lock KEYED ALIKE for your convenience. Now you can lock your hitch and trailer with ONE key. Hitch Lock Fits 1-1/4 x 1-1/4 trailer hitches (Class I and Class II) Pin Diameter: 1/2, Inside Width: 1-5/8, Overall Length: 5, Coupler Lock Fits lever style trailer couplers requiring a 1/2 span, Pin Diameter: 1/4, Inside Width: 1/2, Overall Length: 4-1/8.
If you dont have money to waste, it is the best choice to buy this excelent Heininger HitchMate Hitch Lock - 1.25 Inch & Trailer Lock 1/2 Inch Span Set - 6019. I recommend to buy more of them for sure.