POWERTEC 128022 13-Inch HSS Planer Knives for Grizzly G0689, Set of 2 Replacement blades for Grizzly 13-Inch planer G0689 Made of High Speed Steel for longer cutting life Reversible knives have 2 cutting edges A set of two; plastic case packaging Blade dimension: 13-Inch x 15/32-Inch x 1/16-Inch