①. This Steel Metal Hand Grip Strengthener comes in a variety of resistance levels, including 50lb, 100lb, 125lb, 150lb, 175lb, and 200lb. It allows you to gradually increase the intensity of your workout as your grip strength improves. ②. Made from spring steel, this hand grip strengthener is designed to withstand long term and heavy use. It ensures a reliable performance for both beginners and advanced users. ③. Not only does it strengthen your hand grip but also works on your wrist and forearm muscles. This versatile tool provides an all around workout that helps improve dexterity and muscle strengthening. ④. The hand exerciser features a comfortable handle with grip tape for a secure hold during workouts. It prevents slipping even when hands are sweaty ensuring security while exercising. ⑤. Its compact size makes it easy to carry around so you can perform strengthening exercises anytime, and anywhere, be it at home, office, or while traveling. ⑥. Specification: Material: Steel; Size Chart: 12.9cmx9.9cmx3cm/5.08inchx3.90inchx1.18inch. ⑦. Package Includes: 6 Grip Strength Trainer with Grip Tape. ⑧. Note: Please allow slightly errors 1-2cm differences due to manual measurement.