Blade for lawn mower mower COMPATIBLE TO: 38" side discharge model 1986-1996 Features : Length: 492 mm Centre hole diameter: 10 mm Side hole diameter: 7.9 mm Side hole centre distance: 63.5 mm Code : 22-178 Reference code : 742-0322, 742-0323 742-0472, 742-0473 742-0473A, 742-0493 742-0493A, 942-0473A MTD