JMH2911 model Beast Hack: The JMH2911 is our professional grade, modular deluxe model with indoor, outdoor and mobile hitting station capabilities. We use professional grade softballs (Dudley Thunderheat) that can be changed easily and quickly. The frame is 67 lbs. of powder coated carbon steel. The Beast Hack allows for 55 degrees of angle of rotation when struck so hitters can train to all the big parts of the field. 8"-60" height adjustability. Made in the USA!