13mm Barrel F412
16mm Barrel F253
17mm Barrel F448
22.8mm Barrel F715
Barrels, also known as cylinders or cores, are the inner part of a lock which houses the tumblers and receives the key. Some locks have removable barrels, allowing them to be replaced with a new barrel which can be manufactured to use the same or a different key.
Barrels are categorised here by their diameter.