fitness

SpecificaionA shuttlecock weighs around 4.75 to 5.50 g (0.168 to 0.194 oz). It has 16 feathers with each feather 70 mm (2.8 in) in length. The diameter of the cork is 25 to 28 mm (0.98 to 1.10 in) and the diameter of the circle that the feathers make is around 58 to 68 mm … Read more