1. Material: abs+nylon+metal 2. Acting part: hand 3. Rotate to adjust the strength, free to choose 5kg-60kg 4. Embedded 2.5mm carbon steel spring, safe and durable 5. 3-bit intelligent electronic counting, no omission, lightweight and portable 6. One-key quick zero, efficient exercise, convenient for repeated training 7. Comfortable handle, delicate fit, ergonomic bionic design, no abrasion of the hand, do not slip off 8. Weight: about 229g 9. Size: about 15 x 11 cm
