Vermeer BC900XL wood chipper chip heavily branched material up to 9 inches in diameter. The feed opening is 9 x 14 inches, and its 33-inch-diameter disc rotates at 1,400 rpm. Two steel chipper knives have two usable cutting edges each, and two shear bars also have two usable edges. SmartFeed system monitors engine speed and automatically stops and reverses the feed roller when feeding larger material. The chipper is powered by a 40-horsepower Kohler Command CH1000 engine. Safety features include long feed table design, bottom feed stop bar, and four-position feed control bar.