ABS Guitar Finger Exerciser Piano Guitar Finger Power Trainer Hand Grip Gripper Workout Gym Exerciser Features: 1. Moderate size, perfect feel, easy to carry. 2. Visual force adjustment, adult MF4-1 (3-7 lbs), children MF4-2 (2-5 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 x 60mm x 20mm/3.34 x 2.36 x 0.78'' Net weight: 46g Gross weight: 58g 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.