New Heater Sports Heavy Duty Baseball Pitching Machine with Bonus Ball Feeder One Size:Red black White The Knee Strap stays securely 13 D(M) US:Gray Black White The Knee Strap stays securely in position during activities and the compression can be adjusted to individual needs and is tightened evenly on both sides while reducing overall stick weight The Super Tacks AS2 cutting edge technologies help decrease overall weight and provide comfort and control for advanced to elite level players looking for that top level stick feel and performance PITCHES REAL BASEBALLS UP TO 52 MPH The Heater Heavy Duty Baseball Machine Consists of a 0 10 Speed Control To Adjust Real Ball Pitches From 10 52 MPH PIVOT HEAD ADJUSTMENT FOR GROUNDER & POP FLIES The Easy Knob Adjustment Allows You To Pitch Grounders & Pop Flies So You Can Perfect Your Fielding Practice AUTOMATIC 12 BALL FEEDER INCLUDED The Heater Includes an Automatic Ball Feeder Which Allows A Baseball To Drop Into The Machine Every 8 Seconds