A&I XHT 22-3/8", 3/4" Mower Blade (Set of 4) - B1AR1001,4 Replacement Ariens lawnmower blade(XHT). XHT (Xtreme Hardness & Toughness) blades are 25-40% harder than standard lawnmower blades. Benefits of the HXT blade are sharper and longer lasting cutting edges. More resistance to bending. Tighter tolerances in the aftermarket vs. OEM. XHT blades also offer greater impact toughness. (2) B1AR1001 and (1) B1SB3326 for 60" Cut. Fits Deck 831026. Center Hole 3/4" Length 22-3/8" Thickness .187 Type Medium Lift Width 2-3/4" Crossed From: 30328 ARIENS / GRAVELY 6789 ROTARY 7-04544 PRIME LINE 704544 PRIME LINE This is an aftermarket product, not an OEM. A physical address must be provided, NO P.O. BOXES. Thanks for looking!