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In the lock world there are countless kinds of tumbler locks that come in several sizes and shapes that work in and move in alternative ways. The 3 most basic designs of tumbler locks are the lever, disk and pin; however there's also the interchangeable core lock and the tubular lock, also called the tubular key lock.

History
The tried and tested principles of the pin tumbler lock may date as far in the past as two thousand BC in Egypt ; the lock consisted of a wooden post joined to the door, and a horizontal bolt that dropped into the post. The bolt had vertical openings into which a set of pins was supposed to be inserted.
These may be lifted, employing a key, to an adequate height to permit the bolt to move and unlock the door. Linus Yale, Sr. discovered a cylindrical pin tumbler lock in 1848, a design which was further improved and patented by his son, Linus Yale, Jr, in 1875. Yale, Jr.'s design is terribly like pin tumbler locks made today. From the medium level of lock security is the disk tumbler lock.

These can be discovered in use for items like glove compartments and doors of some cars, desks and file cupboards. Since this lock is often terribly tough to pick it is sold in a few cases as a high security lock. Invented in 1907 and made by Abloy it's also know as the Abloy lock or in varied parts of the Earth as the wafer tumbler lock, though unlike a wafer tumbler or pin tumbler lock respectively, the disk tumbler doesn't utilise springs.

There's a kind of tumbler that's considered quite unusual in the locksmith world called the tubular key lock (tubular lock). These are, due to their special shape and looks, much harder to choose or defeat than the regular pin tumbler. The tubular key lock has tumblers that are fit in a circular keyway and needs the utilisation of a tubular or round formed key so as to correctly align the tumblers. The tubular key can be discovered on laundry machines in laundromats, higher end security padlocks, a selection of dispensing machines and even bike locks. As is proven there are quite a few selection of locks to select from when determining what kind of tumbler most closely fits your needs for many alternative eventualities. From low levels of security to higher most levels, your requirements can be met with the wide array and selection of tumbler locks.