Antique brass plated steel, spring loaded trunk lock. This style of lock is common to a variety of style trunk and cases and is frequently seen on foot lockers. There is a loop to attach a padlock if you are looking for added security. If you have a larger trunk, you may want to consider using the spring lock in the center of the lid front with two smaller draw bolts on either end of the lid front. Another option is to use a spring lock on each end of the lid front. Overall measurements are 4 3/4" high by 3 5/8" wide. Flush mounted. Includes two keys. Mounting hardware not included.