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Got this because I had another before. Wanted to get a whole range of locks. These feel a bit cheap compared to others. The key action isn't smooth for a few of them, the wafer lock just completely no good. The tolerance of the pins are also too high. One lock you can use a few other keys and open it! Not a great training tool. Pins could vary by 3mm and still open.
A new use for these training locks. Beside future locksmiths, elderly people like my mom in law in Sydney can use them to slow down the ageing process of their brain as its a very intense intellectual activity to play with them.