... stable flight . 5.best handfeel Head material: colorfull head , class A duck featherSpeed: 75 to 79Weight: 4.8 to 5.2gSuit ... ChinaWe provide products above and :--All kinds of PU / PVC / rubber basketballs,footballs,soccer balls,volleyballs in high quality.--Favourable price ... term business relationship in the near future. Badminton Shuttlecock, Class A Feather, two layers of head .75 to 79 Speed ,2140 ...