30LBS Strengthener Force Power Wrist Ball Gyroscope Spinning Wrist Rotor Gym Hand grip Exerciser Gyro Fitness Ball Muscle Relax

Characteristic:

1.  computer calibration ball heart balance, high stability and low noise

2.  special durable plastic materials

3.  steel shaft is not easy to break

4. ball shell adopts advanced silicone rubber slip ring, exquisite and beautiful

There are 3 type for sale,the different it is the start

1.Rope start one,need use rope then can start(this one we will offer 2 rope in)

2.Self start(Inside have spring can start by self after a pull)