Guaranteed Metallurgical D2 knifemaking knife blank Model D1UWNT Aftermarket replacment of MTD Part 981-0490 BLADE-CHIPPER Using superior D2 steel Replaces: 781-0490, 7810490, OEM-753-0572, OEM7530572, OEM-7530572 This is an aftermarket replacement blade made out of superior D2 Tool steel Lasts 3x longer! Replaces: 781-0490, 7810490, OEM-753-0572, OEM7530572, OEM-7530572