My 21 month old son loves to manipulate things and is pretty handy, so we bought this as something different for him to play with. What an amazing piece if kit! He loves it! For a toy to hold a toddlers attention for upwards of half an hour at a time says something about its appeal. It is really solidly built wooden toy, with high quality brass fittings to work. There is a range of learning opportunities with this toy, including colours, animals and numbers, as well as the actual latches. Some are really quite stiff to work, but this has taught my son perseverance. He is a bit little for it, but can do most of the latches himself, but needs a wee hand with others. We love this toy.