Hand Grip Finger Trainer Strengthener Adjustable Power Training Home Equipment Piano Guitar Exerciser

Hand Grip Finger Trainer Strengthener Adjustable Power Training Home Fitness Equipment Piano Guitar Finger Exerciser Trainer. 
 
Features:
1. Moderate size, perfect feel, easy to carry. 
2. Visual force adjustment, adult MF4-1 (3-7 lbs). 
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, orange, emerald green, pink ; 
Size: 85mm*60mm*20mm/3.34*2.36* 0.78`` ; 
Net weight: 46g; 
Gross weight: 58g; 
 
Package Include:
1 x Finger Exerciser;