Kids will have fun experimenting—and pretending they are professional locksmiths— as they build this Giant Visible Padlock. Perfect for children who want to learn how locks work and parents who don’t want to take the risk of breaking things, this lock’s visible pin tumbler shows how a key opens the lock, and kids can create their very own key by changing the key teeth around. This kit contains more than enough materials to make at least two giant padlocks. Children can create their own key by changing the teeth of the original key. They will be able to dismantle and reassemble keys just like a professional locksmith. The Kidzlabs Giant Visible Padlock measures With lock: 6.25h x 3.25w x 1”d. Ages 5+.