SET OF 4 - Replacement XHT Blades AM104490 PL4206 1-7037 - B1BU1300. 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 36" cut. (3) blades for 52" cut. Fits commercial walk-behind. Fits Snapper Pro series. Center Hole: 5/8" Length: 18" Thickness: .197 Width: 2-1/2" Crossed From: AM104490 JOHN DEERE A48185 FERRIS PL4206 BUNTON PT8721 JOHN DEERE A-P2005 BUNTON 04916400 GRAVELY 1-303146 EXMARK 1-7037 SNAPPER 100341 HUSQVARNA 100341 KEES 101485 HUSQVARNA 101485 KEES 1303146 EXMARK 1521227 FERRIS 1521227S FERRIS 17037 SNAPPER 1876253 SNAPPER 2-9246 SNAPPER 2683105 SNAPPER 29246 KEES 29246 SNAPPER 300-910 STENS 300910 STENS 301-015 STENS 301015 STENS 303-180 STENS 303180 STENS 310-094 STENS 310-508 STENS 310094 STENS 310508 STENS 315-876 STENS 315876 STENS 330-647 STENS 330-753 STENS 330647 STENS 330753 STENS 355-061 STENS 355061 STENS 363055 KEES 50-4215 WINDSOR 5021227 FERRIS 5021227S FERRIS 504215 WINDSOR 52-2225 WINDSOR 522225 WINDSOR 539100341 HUSQVARNA 539101485 HUSQVARNA 6014 ROTARY 633484 EXMARK 7-04619 PRIME LINE 7-04619 PRIMELINE 7-04764 PRIME LINE 7017037 SNAPPER 7029246 SNAPPER 704619 PRIME LINE 704764 PRIME LINE 7075751 KEES 7075751 SNAPPER 7075751BMA SNAPPER 7075751BZ SNAPPER 7075751BZYP SNAPPER 7076450 SNAPPER 7077344 SNAPPER 76450 SNAPPER 77344 SNAPPER 91-064 OREGON 91046 LASER SALES 91064 OREGON 99-128 OREGON 99128 OREGON A physical address must be provided, NO PO BOXES. This is an Aftermarket part. Thanks for looking!