Warm-up exercise equipment, especially suitable for activists, such as golf, tennis, squash, cricket, badminton, baseball, bowling, basketball, racing, and other outdoor climbing mountains and so on movement by the wrist. Enhance the holding POWER of fingers, wrist, endurance and forearm, biceps, triceps, ligaments and the POWER of the shoulders.

Features:
Suitable for those who need wrist training, such as sportsman, computer typist and pianist.
Lightweight and portable, you can exercise whenever and wherever possible.
Durable material, environmental, tough and harmless.
Steel axis, not easy to deform and break.

Specifications:
Item size: 7.3 * 7.3 * 7.3cm / 2.87 * 2.87 * 2.87in
Item weight: 260g / 9.17oz
Package size: 11 * 9.3 * 6.5cm / 4.33 * 3.66 * 2.56in
Package weight: 340g / 11.99oz

Package list:
1 * Wrist Ball