Davy | Adjustable 5-165kg Heavy Grip Strengthener - Finger Expander for Arm, Wrist, and Forearm TrainingImprove your fitness routine with this customizable and sturdy grip strength trainer, specifically designed to enhance your grip strength, wrist stability, finger mobility, and forearm endurance. Made from a robust steel spring and featuring an R shaped design, this device allows for a resistance setting of 5 to 165 kg, making it the optimal choice for both beginners and advanced athletes. Whether you want to increase your grip strength, train finger