Shuttlecock
Can be made from synthetic or natural materials, but plastic lasts longer and is cheaper. The “feathers” in the shuttlecocks vary in length from 6.4cm - 7cm, but in each shuttle they must be the same length.
The tips of the “feathers” should form a circle with a diameter from 5.8cm - 6.8cm. There should be 16 “feathers” fixed into the base, and the base should be 25mm and round at the bottom.
It is incredibly light and this allows it to reach amazing speeds.