The Portable Guitar Bass Piano Hand and Finger Exerciser Extend-O-Grip Trainer helps beginners develop finger stretching and strengthen finger grip. Skilled players can also use it to maintain a precise grip of little finger when they are away from the instrument. Even better， it features adjustable tension for each finger， allowing the user to set tension from 2.5 pounds to 6 pounds. Compact， light design makes it easy to carry. Made of high-grade materials， it is tough and durable for long-lasting use. Click and order right now!                                    Features             Develop finger stretching and strengthen finger grip<br> Help you maintain a precise grip of little finger when you are away from the instrument<br> Adjustable tension from 2.5 pounds to 6 pounds for each finger<br> Compact and light， easy to carry<br> High quality， tough and durable <br>                                                            Specifications             Brand     Flanger    <br> Model     FA-10P    <br> Material     Plastic & Silicone    <br> Color     Black & Gray    <br> Dimensions     (3.27 x 2.83 x 0.91)" / (8.3 x 7.2 x 2.3)cm (L x W x H)    <br> Weight     2.5oz / 71g     <br>                                                             Package Includes            1 x Hand Exerciser<br>