gripster grip strength trainer ，Upgrade gripster forearm trainer ，finger strengthener，the gripster 3 Adjustable Levels ，For hand treatment ，exercises for grip strength，grip buddy，gripper（one）

No se a ustedes, pero yo entreno antebrazo y tambien hago ejercicio, lo compre y no me sirvio de nada, vi muy pero muy pocos resultados y nada que ver con los videos que muestran.No vi resultados buenos espero sea al unico que le pase.

Everything I've read indicates you should work opposing muscle groups together: if you work your biceps, you should also work your triceps. If you work on pecs, you should also do lats, etcetera. The muscles that extend your fingers, however, are very difficult to strengthen without a specialized device like this.I had one of these from another manufacturer, and the metal clip broke after about 10 uses, so I replaced it with this. The clip is significantly more substantial and looks like it will hold up. This was also a big improvement over the previous unit in a couple of other key ways. The wrist band is thicker and therefore more stable, and the fabric loop holding the clip runs the full length, preventing the clip from "flipping" vertical when in use.One of the pictures for this showed both a gray and black rubber piece, with the latter having higher resistance. However, this unit comes only with the gray band. My previous exerciser, came with both. I wish this one did, as well.