Shuttlecocks are Made from Finely Selected Duck Feathers, Average Size Bones, and Same Shapes, Steady Flying Performance. The Shuttlecock Head is Filled with Fiber Board and Cork Head, Not Easy to Get Deformed, Long Life Time, Super Durable. The Badminton Shuttlecock with Fiber Board is Sewed Up by High-Density Wires, Glued Together by Professional Gum.
This set of -manufactured shuttlecocks ensures a perfect-fit speed, distance, & stability performance. It is made of good qualitative goose feather with a foam base. The shuttlecock rotates at a controllable speed of 350 to 420 revolutions to make sure a stable flight. A wonderful set for professional badminton training or amateur badminton playing.