【High Quality Material】Gripper is made of high quality material, with good toughness and ensuring comfort. The spring is made of high quality spring steel, which is durable and will not break. The size is 6.3*3.9 inches, which is ergonomic and has a soft grip that is comfortable and does not hurt the palm, making it very suitable for carrying. 【Adjustable resistance】 Hand gripper has an adjustable resistance of 5-60 kg. Possibility of having different resistance levels according to your needs to increase the strength of your hand. forearm gripper Effectively develop the dexterity of fingers, hand, wrist and forearm by increasing or decreasing the tension of the hand trainer, the perfect training device for any place such as home, office, travel, etc. 【Fits All Hands & Portability】 - Whethe