Lock cylinders are key components used in locking mechanisms to provide security and control access in various applications. Found in everything from residential door locks to high-security safes, lock cylinders house the internal mechanisms that interact with a key to either lock or unlock a device.

When a key is inserted into the lock cylinder, it pushes the pins or tumblers into the correct alignment, enabling the cylinder to turn and disengage the lock. The quality and design of the lock cylinder are critical for ensuring the security of the locking system, with high-grade cylinders.