1. Material: PP
2. Relax muscles and relieve muscle fatigue
3. Fitness training, soothe the meridians
4. Stainless steel thick spring, durable, wear-resistant and not easy to rust
5. Quantity display, turn the bottom button to clear
6. 5-60kg grip strength can be adjusted to meet various needs
7. Weight: 146 grams, 175 grams can be counted
8. Size: 15x10.7x2.5cm