I've seen the arrows at a friend and had the definitely try sometimes. He shot with his blowgun to 20m on an apple tree, and I and others went there as he watched the arrow with a pair of pliers from the bark were really impressed. The arrows are made of a steel needle with hardened tip and separately enclosed plastic cones in 4 different colors.The assembly is fixed and einfach.Die cones I have outside light on anpoliert same diameter for uniform friction. With a 1m aluminum pipe from the hardware store, which I polished inside I could start immediately. And have real fun. The arrows are on 20m precise and clearly visible on cardboard Targets, however, should only be used under adult supervision. For leisure activities a wise investment!