3.14 x 3.14 x 2.36 inches Showing the single result Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Sort by editor review Added to wishlistRemoved from wishlist 0 Add to compare JIN BD Wrist Trainer Ball Auto-Start Wrist Strengthener Gyroscopic Forearm Exerciser Gyro Ball for Strengthen Arms, Fingers, Wrist Bones and Muscles Added to wishlistRemoved from wishlist 0 Add to compare $15.99