PlumLock 7-Pin Transparent Practice Padlock for Locksmith Training - Cutaway Design with Visible Tubular Lock and Pick Skill Development

Seven Core Plum Lock . Cutaway Practice Disc Type Padlock. Transparent case allow you to see all the moving parts how it work. You can see clearly that how the pians work when a key is inserted. In perfect smooth working condition with no loose parts or pins will come out. You actually can see the pins moving up and down as the key slides into and out of the lock.