Bargman trailer locks made in the 1960s and earlier often used these Hurd H5 keys.

The old L-54, L-55, L-66 and L-77 locks all used these keys. Be careful because later L-66 locks did not use these keys.

The Chesler T-5 locks and earliest L-100 and L-200 locks also used this key, but please confirm your groove pattern front and back.

You can tell because of the general shape of the key which has one side with no groove. Measures 1-7/8". Call us for more information on determining whether your old lock might use these keys. Price is for one key blank.