A&I XHT 20-3/8" High Lift Mower Blade (Set of 2) - B1MU2631,2 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 40" cut. Fits models 40603, 40604, 40606, 40620, 40622, 1989-98. For bagging. Center Hole 27/32" Length 20-3/8" Thickness .187 Type High Lift Width 2-1/4" Crossed From: 056251E701MA MURRAY 091871E701 MURRAY 091871E701MA MURRAY 092002E701 MURRAY 092002E701MA MURRAY 335-016 STENS 335-030 STENS 335-166 STENS 335016 STENS 335030 STENS 335166 STENS 491871 MURRAY 5547 MURRAY 5547MA MURRAY 6034 ROTARY 6112 ROTARY 6129 ROTARY 7-04675 PRIME LINE 7-06419 PRIME LINE 704675 PRIME LINE 706419 PRIME LINE 91070 LASER SALES 91268 LASER SALES 91871 MURRAY 91871E701 MURRAY 91871HT MURRAY 92002 MURRAY 92002E701 MURRAY 92002E701MA MURRAY 92002HT MURRAY 97-006 OREGON 97-109 OREGON 97-119 OREGON 97006 OREGON 97109 OREGON 97119 OREGON This is an aftermarket product, not an OEM. A physical address must be provided, NO P.O. BOXES. Thanks for looking!