Connor Trailer Hitch Lock - 1/2" Chrome Hitch Pin for Class I, II Hitches, 1615100 Receiver Lock FITS MOST COMMON HITCH SETUPS  Fits ALL Class I/II 1-1/4" x 1-1/4" receivers (1/2" pin) DEPENDABLE STRENGTH  Engineered to increase durability and strength EASE OF MIND  Tow up to 3,500 GTW without any worries! 3" usable length- Includes 2 keys & plastic key slot cap EASE OF USE  Insert the key and turn left to remove the lock head from the pin. Secure the lock into the hitch receiver hole and reengage the lock head onto the pin. Pull on the lock to ensure a tight, secure connection 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