Description: - PRODUCT NAME: Badminton racket trainer force device force rod sound badminton racket finger arm power practice skillful force - MATERIAL: Badminton trainer is made of wooden handle and 304 stainless steel weight block, high quality, . - SIZE: Handle length: 20cm/7.87inch, overall length: 37cm/14.57inch, weight: 110-275g (detachable) - ADJUSTABLE WEIGHT: Different weights can be weighted, simulate the swing weight of different rackets, making training more accurate. - 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 Specification: - Material: Wood, Steel Package Includes: 1 Badminton Racket Swing Trainer Note: Please allow slightly errors due to manual measurement and different monitors.