Cage Just turn on the feeder and each ball is dropped into the Slider pitching machine every 9 seconds.FeaturesPivot Head DesignVariable Speed ControlPitches Baseballs Up To 44 MPHFully Enclosed WheelAdjustable Pitch Height12 Ball Automatic FeederTubular Steel Legs with Rubber TipsUses Standard A/C PowerSolid Steel &Fiberglass FrameFoam Padding1 in.Slider Lite-BB And Xtender 24 ft. Take batting practice without the need for another player.