3 1/8″ high x 2″ wide x 7/16″ deep. Stamped Steel body. Steel shackle. Post key. “PAT’D 5-26-14” is stamped on the obverse of the shackle. “MADE IN U.S.A.” is stamped on the obverse of the case at 6 o’clock. “MADE IN U.S.A.” is stamped on the reverse of the body.Patent # D45831