- // Features
* The knob can be turned to change the resistance
* It is designed for gripping to forearm, finger for flexibility.
* Strength the hand muscular endurance.
* Simple to use and easy to integrate into almost any training condition.
* Produced by Taiwan manufacturer with good quality.
- // Specification
* Single color
* Spring: 3mm (resistance adjustable 10~30kgs)
* The knob can be turned to change the resistance