[local stock]Wrist ball arm grip ball mens wrist trainer wrist trainer forearm fitness gravity specialty

[local stock] [1-2 days delivery] [Singapore seller][local stock]Wrist ball arm grip ball men's wrist trainer wrist trainer forearm fitness gravity specialtyMultifunctional design can be used in office, gym or home, and can also exert good pressure reducer as well as a good toy and arm muscleSmart gravity sensor can be used to enhance centrifugal strength and strengthen your limbs coordination or rehabilitation trainingEasy operation can be driven on fast by rotating your wrist to fast speedCompact format can do outdoor activities in your pocketsHigh quality zinc coating and plastic materials, durable and non-toxicNote:1. Please push it slowly towards the arrow eight times, then gradually shake your wrist and use the centrifugal principle to round the ball.2. when the ball spinning, please do not block the rotation with your hands or objects. It is recommended to let the ball stop naturally.Three. Please do not drop the ball or hit hard, because this will damage the ball core.