Connor Trailer Hitch Lock - 5/8" Chrome Hitch Pin for Class III, IV, V Hitches, 1615180 Receiver Lock SAVE TIME, AVOID FUMBLING WITH KEYS, BE SAFE  Remove the key right after unlocking to avoid all the key fumbling and hassle! Push-to-lock technology ensures a secure fit everytime - PLEASE PUSH ALL THE WAY IN TO HEAR CLICK AND ENSURE IT'S FULLY LOCKED FITS MOST COMMON HITCH SETUPS  Fits ALL Class III/IV 2" x 2" & Class V 2-1/2" x 2-1/2" receivers (5/8" pin) EASE OF MIND  Tow up to 20,000 GTW without any worries! 3-1/2" usable length DEPENDABLE STRENGTH  Patented design engineered to increase durability and strength- Includes 2 keys and an all-weather rubber key slot cap CONSTRUCTED FROM HEAVY DUTY SOLID STEEL FOR SUPERIOR STRENGTH  Durable Chrome Finish - For replacement keys or rubber cap please visit our website or contact us on Amazon