1 peice Power Ball Gyroscope Wrist Strengthener Ball / Wrist Power Force Ball / Arm Exercise Power Ball

Color: blue，black，white

Weight: 350g/piece

Function

1. Perfect exercise gadget for sports like golf， tennis， squash， cricketm badminton， baseball， bowling， basketball， motocross， mountain climbing.

2. Increases strength in fingers， wrists， hands， forearms， biceps， triceps， ligament and shoulders.

3. Great benefit for musicians， guitarists， pianists， drummers.

4. Rehabilitates sore muscles and joints.