5 different transparent locksdifferent: individual professional practice tools for beginners. This is a practical selection tool set, no unnecessary tools, Simple and clear.Transparent design - Know exactly what you are doing when entering a lock with the transparent lock. See clearly how the mechanism works. It gives you guidance on the techniques required for picking. Ideal For beginners and for learning to pick.Safety design tool - The hook sets are made of high quality smooth stainless steel and will not scratch your fingers. The handle is made of soft plastic and offers a comfortable grip. Transparent padlocks made of high purity plastic, free of dirt and grit. Lock in core precision a hundred thousand times by leveraging your endless training needs.