CMT 794.206 3-Pcs HS Planer and Jointer Knives, 8-1/16-Inch Length Knife size: 8-1/16-inch in Length, 5/8-inch in Height and 3/32-inch in thickness. Suitable for cutting dry softwood, dry and wet hardwood. Carefully ground from fine European high speed steel. These knives produce high quality finish.