Short Description: Dimension length: 8.8 * 6.7 * 2.5cm Net weight: about 82g Material: ABS Product features: portable, easy to carry Origin: China Children’s: strength 2-5 pounds, users: 4-10 years old children Adult: strength 4-7 pounds, suitable for people over 10 years old Product Description: Fully closed without clamping hands, the spring is not exposed, which is safer and more firm. Streamlined design, more fit the palm, practice is not easy to fatigue. High quality silica gel pad, with silica gel pad at the top and bottom, comfortable handle, anti slip and anti perspiration. Groove setting, finger positioning, anti-skid. The buttons are flexible and durable. Color: Random What’s in the box: Finger force device*1 Weight: 0.4 SKU: 220605092042