High Quality: Made of high quality steel material, durable. 3inch diameter. Feature: Easy to install. These pinch grips hold a lot of weight. Professional Grip Enhancement: Designed specifically to enhance pinch grip strength, it activates your muscle groups in new ways, effectively improving hand endurance, flexibility, and grip strength. Portable Design: This compact metal pinch grip trainer comes with a carabiner, ensuring it can be securely and easily attached to your gym equipment, making it a perfect addition to your training gear. Hand Pinching Power Training Power Strengthener: Whether you're a climber, weightlifter, or just looking to improve your hand strength, our metal grip trainer is a great tool for overall hand and forearm development. High Quality: Made of high quality steel material, durable. 3inch diameter. Feature: Easy to install. These pinch grips hold a lot of weight. Professional Grip Enhancement: Designed specifically to enhance pinch grip strength, it activates your muscle groups in new ways, effectively improving hand endurance, flexibility, and grip strength. Portable Design: This compact metal pinch grip trainer comes with a carabiner, ensuring it can be securely and easily attached to your gym equipment, making it a perfect addition to your training gear. Hand Pinching Power Training Power Strengthener: Whether you're a climber, weightlifter, or just looking to improve your hand strength, our metal grip trainer is a great tool for overall hand and forearm development.