Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

Features:Transparent case allow you to see all the moving parts how it workYou can see clearly that how the pins work when a key is insertedYou actually can see the pins moving up and down as the key slides into and out of the lockIn perfect smooth working condition with no loose parts or pins will come outSpecifications:Material: Stainless Steel+ABS PlasticColor: Transparent，light red，light blue，light yellow，light greensize:5 x 3 x 1.2 cmPackage Included:1 x Transparent Cutaway Practice Padlock1 x Keys9 X Locksmith Crochet Hook1 X L Shape Tool1 X Z Shape Tool