THOMAS CUP SUPER TOURNAMENT 8 (Thomas Cup Super Tournament 8) This is a set of 10 unused shuttlecocks, number 4. I previously purchased these for practice for elementary and junior high school students, but the local tournament decided to switch to synthetic shuttlecocks, so I'm selling these as I'm switching to synthetic shuttlecocks for practice as well. These are number 4 shuttlecocks, but they fly almost as far as number 5s, and they're not very durable, which is reflected in the price. They might be good for lower elementary school students who don't have much power. They're not very suitable for older elementary school students or beyond. They break easily if hit by children with more power. Since I don't have the original box, I will ship them in a box from another manufacturer. Thank you.