Tennis Bullet designed for all ground stroke exercises performed by one or two hands and coming in two sizes: small and big and four lengths: short, medium, long and extra long. Go to Sizes Chart for more information. Rapid stroke beginning, muscles action coordinated in one, wrist and hands action, legs work can be practicing with Tennis Bullet. Tennis Stroke Extender will add more control to you practice by visualize a contact point with a target, pass, direction and extending through a target. Tennis Stroke Extender very effective to practice the right position before hit a ball. Easy to assemble and carry. Go to Tennis Stroke Extender for more information.