12 Badminton Duck Feather Shuttlecocks Set with a Storage Tube

This set of precision-manufactured shuttlecocks ensures a perfect-fit speed, distance and stability performance. It is made of good qualitative duck feather with cork base. The shuttlecock rotates in 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. Features: Proper speed, and Aerodynamic stability and strike performance. High-quality durable duck feather skirt with cork base. (for M7) The rotation speed controlled in 350 to 420 revolutions, provides a smooth flight. Perfect for beginner and amateurs badminton training sports. Lightweight, high-cost performance, and admirably stable. Specifications: Color: White Model: M7 / M10 (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 * Badminton Shuttlecock