Make art in seconds. Just push the object you want to make a 3D impression of into the fine metal pins at the back, it’s as simple as that! The impression remains intact as long as don’t disturb it and when you are ready, you can start all over again. 17.5 x 12.5 x 6cm. Metal pins; 41mm.Get creative, we've used these to model depth surveys in oceanography, what could you do with it?Choking hazard: Not suitable for children 3 years and under.