The Cutting Board with Pivot Knife and Bread Buttering Cutting Corner is helpful for those with low vision and those who need to chop food with only one hand. This handy kitchen helper consists of an 11.8-inch square cutting board mounted on four suction cups, with a chef's knife attached at its tip and hinged so it can be used in a chopping motion through an arc of 90 degrees. Suction cups prevent the cutting board from slipping while you cut. The knife can be removed for cleaning and sharpening. The cutting board is made of 1/2-inch thick, durable, sanitary polyethylene.