Thank you for viewing! Instant purchase is welcome, and shipping is free. 【About Shipping】 We ship within 2-3 days, excluding weekends and holidays. Shipping is included. Thank you for viewing. New, unused. Instant purchase is welcome!! Thank you for viewing. Please note that we sell our products on other sites as well, so they may occasionally be out of stock or on backorder. PROIRON Finger Power Hand Grip Strength Training Grip Forearm Muscle Training Hand Gripper Grip Strength Training Tool Finger Trainer Wrist Training Finger Grip Finger Muscle Training 5kg-60kg Adjustable Resistance 【Adjustable Strength】5-60kg strength range, clockwise to strengthen, counterclockwise to weaken, easy to adjust from beginner to advanced use, a key to adjust to meet consumer needs, convenient for the whole family. 【High-Quality Spring, Strong and Durable】The grip strength device adopts a high-strength spring with a diameter of 3.0mm and 10 coils, which is more robust and durable, and has a long service life. 【Ergonomic Handle, Comfortable Grip】The ergonomically designed handle fits the palm of your hand and provides a comfortable grip. The handle is made of TPE material, which further enhances grip, is non-slip and sweat-resistant, and prevents calluses even after long-term use. 【Compact and Portable, Exercise, Relaxation, and Decompression Anytime, Anywhere】Compact and lightweight, you can carry it with you and exercise anytime, anywhere. Not only does it increase hand strength, but it can also relieve stress. 【90-Day Peace of Mind】Please purchase with confidence, feel free to contact PROIRON customer service. Color: 1 piece Material: Polypropylene, Thermoplastic Elastomer, Alloy Steel Brand: PROIRON Style: Grip Manufacturer: Shanxi Regent Works Inc. Thank you very much for checking everything. We hope you will purchase after confirming the above. If you have any questions, please feel free to contact us via message.