Usage Tips:Size: 14.5cm Color: Black and Gray Material: Main Body PP Engineering Plastic + TPR Handle Plastic Wrap + Spring Steel Package Content: 1 * clamp 1. 【Hand trainer with counting function】: With this function, the number of consecutive printing processes can be saved between 0 and 99 each time. Easily adjustable resistance range 5-60 kg. Perfect for beginners and advanced users! 2. 【Hand Trainer Rehabilitation Equipment】: The hand trainer finger training set for the treatment of patients with hand injuries, tendonitis, arthritis, carpal tunnel and tennis elbow. Quickly strengthen targeted muscles without injury. 3. 【Hand Trainer Finger Dumbbell, Large Use Area】: Relieve your stress at the same time to increase forearm strength and hand strength. The is a forearm trainer for fitness, crossfit, climbing, bouldering, tennis, boxing, rehabilitation, guitar, etc. Whether at home, traveling or in the office, our finger trainer is the perfect companion. 4. 【Pocket-sized - easy to carry】: The ergonomically shaped handle of the Sporgo hand trainer is particularly comfortable and secure in the hand. Ideal for everyday use, you can train and build muscle anytime, anywhere. Thanks to the special surface structure, our hand muscle trainer guarantees ideal handling without slipping! 5. 【Ergonomic design】: The upgraded and widened handles are equipped with skin-friendly plastic pads to make you more comfortable. Note: The data is all manual measurement, please allow 1-3cm error ;due to the light and display difference, there would be a certain color difference, please refer to the actual object received.