4 3/8″ high x 4 11/16″ wide x 1″ deep. Iron body. Iron shackle. Weight: 3.6 lbs. “7” is stamped on the obverse of the shackle. “Ar 1653” is stamped on the reverse of the shackle. Rolling shackle. To open the lock you must position the 2 dust guards in the correct position, then rotate the key 180 degrees. If you do not have the dust guards in the correct position the lock will not open.