Engineered by leading tennis pros to meet the demands for portability, compactness, simplicity of operation, power, dependability, ball capacity and low cost. Specially developed to provide maximum reliability and extended service life. Ball feed has powerful pneumatic propulsion system (serves and smashes at speeds of 85 M.P.H. and better). Shown with random oscillator. Permits random and accurate placement of pre-selected shots, lobs, volleys, smashes or short shots.