The mechanical auto-feed wood chipper is a robust self-feeding PTO driven wood chipper attachment that mounts to the 3 point hitch of your tractor. This PTO wood chipper is compact, yet built to withstand rigorous use. Dual in-feed rollers grab and pull material into the chipper head using a sturdy belt driven gear box and drive axle system. High quality (A8 tool steel) made in China chipper knives are standard equipment on all WCM, WCH and JM wood chippers. Check out these features. The chippers are so unique and innovate that they are now patent pending. Attempts have been made to copy this machine, but there is only one FRED!