5-60kg Adjustable Mechanical Counting Gripper Finger Strength Training Device(Black)

1. Material: main body PP plastic + spring steel spring
2. Strength value: 5-60kg
3. Weight: about 135g
4. Spring diameter: 3mm
5. Dimensions: length 11 cm, width 2.2 cm, height 16 cm
6. Automatic counting, the number of exercises is clear at a glance, can be cleared and reused
8. The knob can easily adjust the intensity to meet your different needs