Freud 6" x 5/8" x 1/8" High Speed Steel Industrial Planer and Jointer Knives (C350) Contains 3 Pieces, 6" Length, 5/8" Width, 1/8" Thickness Precision machined for best results Premium high speed steel stock for the keenest edge and longest life Pre-ground to a razor sharp edge for the smoothest cut. Covered by Freud's limited lifetime warranty