3 1/4″ high x 2 1/2″ wide x 1″ deep. Brass body. Brass shackle. 3 brass wheels. “21” is stamped on the obverse of the shackle. “012303” is stamped on the reverse of the shackle. “Casper KEYLESS” is etched on the obverse of the body. To open the lock: Count the correct number of clicks on each wheel, then push the panel on the side of the case, and the shackle will pop up. Doug named this lock after his dog “Casper”. January 23, 2003. Only 1 of these locks were made.