The Turbojav is a youth throwing javelin implement designed for baseball and athletics programs for all abilities. They also develop correct throwing technique for many sports like baseball football cricket etc. The TurboJav teaches the basic fundamentals and mechanics associated with any throwing motion. The TurboJav MINI JAVELIN was originally designed to teach beginner javelin throwers the same throwing fundamentals in a safe and fun environment. It is also ideal for the more advanced athlete to use as a training implement to improve their accuracy and technique. WARNING: Do not throw on a hard surface as the Turbojav might break. Visit us at www.tompetranoff.com and download our throwing manual