Clear Transparent Practice Locks - 5 PackThese clear transparent practice lock has a transparent case which allows you to see how the moving parts work, and how the pins work when a key is inserted. Its of high quality and in perfect condition with no loose parts or pins will come out. What's Included: 1 x Clear Disc Detainer Practice Lock 1 x Clear Transparent Padlock Practice Lock 1 x Clear 5 Pin Rim Cylinder Practice Lock 1 x Clear 7 Pin Dimple Practice Cylinder Lock 1 x Clear Cruciform