1. Material: spring steel
2. Dimensions: length 63cm width 11cm height 8.5cm
3. Weight: 1.45 kg
4. Three levels of resistance adjustment using compression and stretching two-way fitness to make muscle exercise more balanced
5. The weight of the arm force can be adjusted by adding a snap ring to achieve different exercise effects (each snap ring weighs about 2.3kg and can be increased up to 6.9kg)
6. Portable so that your exercise is no longer restricted by time and place

Packing list:
Arm Strength Brawn Training Device x 1
Manual x 1
Handle x 2
String pull x 2
Leg support belt x 2
Adjust the velocity wheel x 3