This set of -manufactured shuttlecocks ensures a perfect-fit speed， distance， and stability performance. It is made of good qualitative goose feathers 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. Proper speed， and Aerodynamic stability and performance. The rotation speed controlled in 350 to 420 revolutions， provides smooth flight. Perfect for beginner and amateurs badminton training sports. Lightweight， high-cost performance， and admirably stable.

• Specifications - Color: White
• Model: M7 / (Optional)
• Skirt: Duck feather/goose feather
• Base: Cork / foam
• Speed: 76
• Rotational Velocity: 350-420 revolutions
• Weight: 4.7-5.5g (one piece)
• Package weight: 179g， 6.3oz / 171g， 6.0oz
• Package List: 12 x badminton shuttlecock