increase strength of fingers ,wrist ,hand cheap fitness suitable for children and old people

Wrist ball,roller ball ,exercise wrist ball

1.increase strength of fingers ,wrist ,hand 2. oem wrist ball 3. without light

 

Pvc or rubber Wrist ball,roller ball ,exercise wrist ball 

material	pp
package	color box
ctn/quantity	43*39*47cm/34.5pcs
Fcl20'GP/40'GP/40'HQ	28800/60000/69000

Features:

Wrist ball is a portable trainning device, it does well in arm trainning to keep muscle stronger . There's no battery or electricity inside the device, It is application by centrifugal force & inertia like a gyroscope. It is powered by rotating the wrist. The faster we rotate the ball, the stronger the dynamic and torsion is produced.

1)Zinc. roller

2)A grade PC plastic case,and various colors are available for it

3) Handle sheath come with PVC , Black or White  for your choice

4) with or without light5) speed run over 12000rpm

6) attach one start string