antistress expander set for hands power hand strengthener grip trainer sport musculation guitar fingers simulator

this hand grip exerciser is ideal for rock climbers, bodybuilders, golfers, surfers, tennis players, drummers, guitarists, pianists, massage therapists, baseball players and musicians, improving the flexibility of fingers and wrists. it is also beneficial for people who have arthritis, rheumatoid arthritis, and carpal tunnel syndrome. fit for small and large hands, seniors and teens.