The shuttles are varied, including Yonex Aerosensor 300-700, New Official, Redson, and Gosen. Primarily, they are: * Shuttles with 1-4 feathers broken * Shuttles with softened feather bases * Shuttles that are not perfectly circular While these shuttles can still be used for badminton drills, they are not recommended for use by the baseball team. I have checked them carefully and trimmed the feathers, but this is based on my subjective assessment. Please understand. I have tried to remove those with noticeably reduced flight performance. Please comment if you would like additional photos. In the past, these have been purchased by those using them for junior badminton or club activities. Please consider purchasing. Keywords: Badminton, Shuttlecock, Knocking Practice, Basic Practice, Semi, Redson, Yonex, Practice, Baseball Team, Feathers