These are used Aeronsensa 500 shuttlecocks. They are shuttlecocks used in matches. Most of them have one broken feather, followed by many with no broken feathers, and a few with two broken feathers. I think they can be used for badminton hand-toss drills and basic practice. They can also be used for batting practice in baseball and softball. Since they are not new, please refrain from purchasing if you are looking for new ones or are overly concerned about their condition. Please feel free to ask any questions you may have, and make your purchase after you are satisfied.