XHT 19", 51/64" Mower Blade (Set of 6) - B1JD1052,6 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) blades for 54" cut. Fits 54C decks. Center Hole 51/64" Length 19" Thickness .187 Type High Lift Width 2-3/4" Crossed From: JD0292 MOW MORE JD18A MOW MORE M115329 JOHN DEERE M143520 JOHN DEERE M152726 JOHN DEERE M96706 SHOUP M96719 SHOUP 10292 ROTARY 1413-7008 A & I MEGA-CROSS 14137008 A & I MEGA-CROSS 330-393 STENS 330-489 STENS 330393 STENS 330489 STENS 396-719 OREGON 396719 OREGON 50-4441 WINDSOR 504441 WINDSOR 6221 ROTARY 90-354 OREGON 90354 OREGON 91-384 OREGON 91384 OREGON 91605 LASER SALES 91743 LASER SALES 91753 LASER SALES A physical address must be provided, NO PO BOXES. Thanks for looking!