This is a transparent tubular lock similar to those found on vending machines and other high security applications.
This lock has transparent shell to allow you to see all the moving parts and how they work.
You can see clearly that how the pins work when the correct and incorrect key is inserted into the lock.
You actually can see the pins moving up and down as the key slides into and out of the lock.
This is a fully functional lock and is prefect for sharpening your lock picking skills. It is also a valuable sale /training aid.
You will get one transparent lock and one key. Additional keys are available for a small cost.