It is typically composed of a shaft with an arrowhead on one end and fletchings and a nock on the other. Traditional arrow shafts are constructed of lightweight wood, bamboo, or reeds, but modern arrow shafts are made of carbon fiber, aluminum, fiberglass, or wood and can range in length from 45 cm to 150 cm. Archers usually choose their arrow shaft based on how much force they need to produce and their arm strength. Longer arrow shafts allow for more power to be placed into each shot. The three main components of an arrow shaft are the shank, the tip, and the fletching. The shank is the part that connects the arrow to the bow. It can be made of steel or titanium, but most commonly it is made of bamboo. The tip is the part that contacts the target and may be made of stone, metal, or plastic. The fletching is the decorative element found at the end of the shaft opposite the arrowhead. It acts as air resistance when the arrow is being fired and can be made of feathers, brads, or strips of cloth. Bamboo is the most common material used for arrow shafts because of its weight efficiency and longevity. Bamboo does not rot like wood does and can last for hundreds of years if cared for properly. It is estimated that there are enough virgin forests today that one tree will replace itself every 3.5 minutes! That's half a forest destroyed every second!