RISING Hand Gripper Hand Grip Exerciser with Steel Increase Finger Strength for Bigger Lifts & Better Pull Ups, Crossfitters, Body Builders, Climbers Ergonomically solid aluminium handles with knurled coating for a non-slip grip Different strength levels for beginning, intermediate and advanced training (100 lbs-350lbs) Perfect to increase massive forearm muscles, hand endurance and dexterity Great for improving daily function, such as opening and closing jars, or rehabilitation after an injury. Made with top grade, durable aluminum handles and high quality springs for a long-lasting exercise tool you can rely on