Usage Tips:20-45KG Finger Ball Exerciser Hand Grip Strengthener Adjustable Power Training The Grip Strengthener is made of high-quality materials that are built to last. A must have for building finger strength. It is perfect for strength training, and physical therapy for the hands and fingers It is designed to withstand regular use and resist wear and tear, ensuring that you can continue to use it for a long time. This Grip Strengthener is compact and lightweight, making it easy to carry with you wherever you go This Grip Strengthener can be used for a variety of exercises and workouts. You can choose the appropriate level according to your grip strength. Great to strengthen finger function and movement You can easily fit it in your gym bag, backpack, or even your pocket, so you can continue your hand and finger strength training wherever you are. Whether you are recovering from an injury or simply want to improve your grip strength, this Grip Strengthener is a great tool to have These hand exercisers are great for guitarists, office workers,pianist,musicians,artist,craftsperson,woodcarver, webpage designer, etc. Exercise the whole arm to develop excellent hand wrist and forearm strength Specification: Material: ABS/TPE/Carbon Steel Spring Package Included: 1 x Finger Grip Strengthener Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. 2. Please allow 1-3cm measuring deviation due to manual measurement. ( 1 inch = 2.54 cm ) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.