DIY Pen Factory Kit I. Educational game for children - DIY Pen Factory is the perfect toy for kids who love drawing and coloring, allowing them to create their own pens. There are many educational experiments such as creating pens that smell, have invisible ink, change color, glow in the dark and more! The set includes 65 essential elements and 12 fun activities. Recommended age: 6+ years 207 x 300 x 60 mm