A&I 17" Mulching Mower Blade (Set of 3) - B1JD1043,3 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) blades for 48" cut. Fits 48C decks since 1999. Center Hole 51/64" Length 17" Thickness .197 Type High Lift Width 2-1/2" Crossed From: M127500 JOHN DEERE M127673 JOHN DEERE M145476 JOHN DEERE M96354 SHOUP 10291 ROTARY 12821 ROTARY 330-369 STENS 330369 STENS 50-4442 WINDSOR 504442 WINDSOR 90-348 OREGON 90348 OREGON 96-354 OREGON 96354 OREGON This is an aftermarket product, not an OEM. A physical address must be provided, NO P.O. BOXES. Thanks for looking!