WEIGHT LEVEL: 6 weights are equivalent to the swing weight of a 3u racket; 5 weights are equivalent to the swing weight of a 4u racket; 4 weights are equivalent to the swing weight of a 5u racket
MATERIAL: Badminton trainer is made of wooden handle and 304 stainless steel weight block, high quality, .
PRODUCT NAME: Badminton racket trainer force device force rod sound badminton racket finger arm power practice skillful force
ADJUSTABLE WEIGHT: Different weights can be weighted, simulate the swing weight of different rackets, making training more accurate.