Perfect for fun, dressing-up, costumes, or steam-punk fans.The kit comes with 3 different colored lenses: yellow, blue, and red.Great for experimenting with colored lenses.Try combining different colored lenses for an unforgettable experience. Eco-friendly sustainable material made of FSC-certified wood. Very high precision with laser-cut plywood with amazing details. All-inclusive boxes, self-assembly. No messy glue is required. Clear colorful step-by-step assembly instructions. The model includes candle wax for gears, sandpaper, and rubber bands (not all kits, included when relevant). Very sturdy construction.