A&I XHT 18-11/16", 1X1-1/8" Mower Blade (Set of 3) - B1KU1022,3 Replacement XHT Lawnmower blade. 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. (3) required per application. Center Hole 1-1/8" Length 18-11/16" Replaces 76529-34330, 70000-25004 Thickness .250 Type High Lift Width 2-1/2" Crossed From: KU19 MOW MORE 330-542 STENS 330542 STENS 50-4490 WINDSOR 504490 WINDSOR 6265 ROTARY 7-06707 PRIME LINE 70000-00605 KUBOTA 70000-25004 KUBOTA 7000000605 KUBOTA 7000025004 KUBOTA 706707 PRIME LINE 76529-34330 KUBOTA 7652934330 KUBOTA 91-436 OREGON 91334 LASER SALES 91436 OREGON This is an aftermarket product, not an OEM. A physical address must be provided, NO P.O. BOXES. Thanks for looking!