1. Material: spring steel 2. Dimensions: length 67.5 cm, width 32 cm, thickness 2.8 cm 3. Weight: 1kg 4. A total of 5 tension springs, not easy to deform, full of tension 5. The spring can be disassembled into 5,4,3 freely 6. The tension of each spring is about 147N (about 14.4 kg) 7. It is recommended to choose your own weight when exercising
