Type: Strengthening Exercise Force Ball Material: PC + PP
It is powered by rotating the wrist, and the speed can reach up to 12,000 RPM. All you need to do is to increase the speed by making a rotational wrist movement and to keep in step with the rotation of the ball. The faster you turn the harder your muscles work.
Internal LED bulbs will light up when the ball is moving. Strengthening fingers, wrists, hands, forearms, shoulders and biceps etc. and also be Beneficial in promoting coordination and circulation.
Rehabilitates sore muscles and joint, ideal for musicians, guitarists, pianists, drummers. Counter function enables you to check your speed.
Size: (shown as the picture) Approx. 7*6cm/2.76*2.36inches

Technical Details

Width : 0.75 cm
Height : 0.75 cm

Product Details

ASIN : B01NGZMOPC