Listed time: Spring 2015; color classification: electroplating Brawn device; wrist type: wrist and selected according to the fitness effect: practice arm muscle; professional wrist force training and rapid promotion of forearm strength. Thick sponge protection， safe and comfortable; weight: net weight 390 g， gross weight of 390 g; color: black spring， black handle; scope of application: wrist training; material: plastic， foam， nylon fiber; main efficacy: palm muscles， before the forearm flexorMuscles，