Give yourself the perfect "set" every time with the Tandem(R) Spike Challenger. This volleyball training device is made of durable metal and includes a "ready to attach" ball and cord system so you can begin practicing right away. An adjustable pole can change heights to accommodate players of all sizes. Improve your arm swing, footwork, conditioning and ball contact when you use the Tandem(R) Spike Challenger. FEATURES: Ideal for conducting hitting drills to improve ball contact, arm swing, footwork techniques and conditioning Pre-positioned ball creates the ideal "set" every time Made with durable metal for stability and durability Adjustable pole accommodates players of all sizes and skill levels Includes 2 wheels for ideal portability and a weight for stability Manufacturer's warranty: 1-year Model: TSSPIKECHALL For additional information relating to the Manufacturer's Warranty, please contact 1-800-766-1098.