A blade is the part of chippers and shredders that cuts the grass. It spins rapidly and pulls the grass up before cutting it. The grass is sucked into the deck, where the clippings continue to get chopped into smaller pieces before getting expelled. With regular use of the blade, after accidental damage, or because of the age of the machine, the blade may cease to perform adequately. Running the lawn equipment over rocks or other solid obstacles may also cause the blade to break. In any case, the blade has to be removed, and a new blade should be installed. Wear gloves for protection and handle the blade with caution. Make sure the machine is cooled entirely before beginning the repair.This blade is a genuine OEM part sourced directly from the manufacturer. It is made of durable, high-quality metal. The blade is sold as an individual unit. The replacement part is compatible with MTD, Troy-Bilt, Yard Machines, and Huskee brand lawn and garden machines, including chippers and shredders.