A&I XHT 19-7/16",27/32" Mulching Blade (Single) - B1MU2637,1 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. (2) blades for 38" cut. 3-in-1 blade. Center Hole 27/32" Length 19-7/16" Thickness .156 Type Medium Lift Width 2-1/4" Crossed From: 92543E701 MURRAY 95104E701 MURRAY 97-021 OREGON 97021 OREGON This is an aftermarket product, not an OEM. A physical address must be provided, NO P.O. BOXES. Thanks for looking!