Have your team practice their skills with the Tandem Sport Spike Challenger and soon the competition will be quaking in their kneepads. This ultimate spike training device is ideal for ball contact, arm swing, and footwork training drills. Constructed of sturdy metal with a weight for stability, this device includes a ready-to-attach ball and cord system that pre-positions the ball for a perfect ""set"" every time. The pole height adjusts to accommodate hitters of all sizes and skill levels. Two wheels make it easy to transport this device to and from storage. About Tandem Sport For quality volleyball, sports medicine and sporting goods, look no further than Tandem Sport. From ankle braces to training equipment to volleyball-shaped picture frames, Tandem Sport manufactures and delivers fun and functional products to the retail sporting goods market. Tandem Sport was founded in 1989 and is based in Louisville, Kentucky. * Sturdy metal construction * Pre-positioned ball for the perfect set"" * Counterweight for stability * Adjustable pole height * Includes a ready-to-attach ball and cord system * Dimensions: 34L x 17W x 67H inches