The Morbark Model 23 Chiparvestor® whole tree chippers are built to last. The hydraulic chipper hood allows for easy knife access, while the 23″ (58.42 cm) chipping diameter tackles some of the larger trees. Each chipper disc is put through ultrasonic testing, making it the best chipper disc in the industry. Options include a four-knife chipper disc, Strickland NS38 or Caterpillar 320L undercarriage track, 11-HP air compressor, and many more. The Model 23 is able to chip large volumes of wood with its 75″ (190.5 cm) chipper disc. It also contains the Morbark Integrated Control System, which automatically adjusts feed rates, monitor pressures and feed wheel position to maximize production and engine efficiency.