Hand-held finger trainer strengthener strength training home fitness equipment piano guitar finger exerciser trainer

Features:
1. Moderate size, perfect feel, easy to carry.
2. Visual force adjustment,Universal
3. Soft silicone protection at the bottom and top, comfortable to the touch, anti-slip and anti-slip.
4. Each button is flexible, not loose, durable.

Specifications:
Material: ABS
Color: black, yellow
Size: 9.3cm*7cm

Note:
Please allow 1-3mm differs due to manual measurement.
Due to the different display and different light, the picture may not show the actual color of the item.
Thanks for your understanding.