FeaturesAdjustable Finger Exerciser and Hand Strengthener: Change the positions of the hook to adjust the resistance value, 6 levels resistance( Heavy Black: 13 lbs, 17 lbs, 21 lbs and Light Grey: 6.6 lbs, 8.8 lbs, 11 lbs), Suitable from beginner to advanced.Physical Therapy & Rehabilitation: Hand workout equipment for arthritis, stroke rehab, carpal tunnel, tenosynovitis, fractured, tendon surgery and tennis elbow, reduce stiffness and pain.Athletes & Musical Instruments: The grip strength trainer kit is works for improving power and flexibility in the wrists, fingers, and forearms. Gifts for rock climbers, Tennis players, Guitar, Piano, Drummers & Musicians.Durable & Ergonomic Design: Adjustable hand extensor exerciser can be worn comfortably by any size wrists and finger, Suitable for finger workout habits. Suitable for Teens and adults.Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days.When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you.Thank you for choosing our product. We hope you enjoy it