Tennis Double Bullet designed to practice legs and hands coordination, balance and athletic skills. Both legs and hands are equally important and must be equally developed. Tennis Double Bullet especially useful to practice tennis volley technique. A volley technique is easy to understand, but difficult to practice. Tennis Double Bullet brings all necessary features for volley technique development. Go to Sizes Chart to see devices specifications. Tennis Practice Stand will add more control to practice by visualize a contact point with a target, pass, direction and extending through a target. Go to Tennis Practice Stand page for more information.