[Durable Construction]: Our hand grip strengthener is made of aluminum material and features ergonomic aluminum handles. A strong compression spring and well-designed gripper construction provide a firm and reliable build. [Metal Grip Strength Trainer]: Ideal for improving hand strength and rehabilitation. Helps enhance strength, endurance, dexterity, muscular tone, and motor skills in the hands, wrists, and forearms. Suitable for individuals with arthritis, tendonitis, or carpal tunnel syndrome. Also beneficial for musicians, athletes, golfers, rock climbers, and tennis players. [Grip Strength Trainer Set]: Includes 3 units with resistance levels of 100 lbs, 200 lbs, and 300 lbs. Three different resistance levels allow for progressive training. The 100 lb offers moderate resistance, 200 lb provides increased challenge, and 300 lb delivers maximum difficulty to help build grip strength over time. [Lightweight and Portable]: Compact design easily fits in a pocket or backpack, allowing you to carry it anywhere. Enables convenient workouts at any time and place. [Perfect Item for Daily Strength Training]: Forearm and hand strength trainer ideal for climbers, weightlifters, athletes, and individuals of various ages seeking to improve hand strength. Use during work breaks or leisure time to exercise hands anytime, anywhere. Color: Silver Material: Aluminum Package Contents: 3 x Hand Grips Note: Light reflection and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.