POWERTEC HSS Jointer Knives for Grizzly 8 " G0490 and G0490X, 8" x 3/4" x 1/8", Set of 4 Fit 8" jointer - Grizzly G0490 and G0490X Replacement for Grizzly H8842 High Speed Steel A set of four BladeDimension: 8" x 3/4" x 1/8"