High quality replacement chipper knife anvil (Bed Knife) for your brush chipper. Knife Source anvils are manufactured here in the U.S.A. using high-grade A8M knife steel. Anvils are dual tempered which makes them hard enough to hold an edge yet tough enough to take a pounding. Each knife is hardened and machined to OEM specifications. Anvils are often overlooked but make a big difference in a chipper's performance. When you install a new anvil, and the clearance is set to the "sweet spot", the chipper eats wood effortlessly, and doesn't work near as hard.