[High Quality Materials] One set of two high quality hand grippers made of high quality ABS, carbon materials, bold springs and will not rust, high flexibility and durability, strong enough for heavy work exercises. Length of life. [Adjustable Resistance andamp Smart Counting] - This handheld grip adjustable between 10kg-100kg as needed, the built-in electronic counter records complete grips and is easy to reset, making it easy to count down your workout and quickly take your strength to the next level. [Ergonomic Design] - Ergonomically designed in structure, the hand grip design perfectly fits the shape of your fingers, allowing you to train with a comfortable grip. [Suitable for All] Hand strength, great for finger, wrist and forearm training, building hand strength, increasing finger grip and flexibility. Perfect for wrestlers, athletes, musicians, rock climbers, golfers and tennis players, muscle builders, exercise trainers. [Improve Strength andamp Injury Rehabilitation] The finger strengthener is ideal for improving wrist, finger and forearm muscle strength and flexibility, can be used as a hand exerciser for therapy and physical therapy equipment. [Portable Design] Lightweight and portable design allows you to easily put them in your bag, pocket or gym bag, so you can bring your hand with you anywhere! Dimension: 16x14.5x3cm. Material: ABS metal Size: 16x14.5x2.3cm Strength: 10 - 100 kg (22 - 220 lbs) Screen: Electronic display Spring diameter: 4mm Package includes: 1 x grip strength trainer