Cook – Combination Lock. 1 3/8″ high x 7/16″ body diameter x 3/32″ pin length (Actual: 1.385″ high x .437″ body diameter x .095 pin length” deep). All brass construction. It works exactly like the original whereby each of the 5 pinned wheels must be turned left, center, or right in the correct order to unlock the shackle. When unlocked the body drops down and allows the shackle to be hinged opened. The only thing ommitted was the changable combo function. The orginal could be taken apart and the stack changed to another order. This is a miniature rendering of James L. Cook Patent # 1196844. January 2009. Only 5 of these locks were made.