XHT 19-1/4", 5/8" Mulching Mower Blade (Set of 2) - B1TR3104,2 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 38" cut. ZTR models 616 and 620. Center Hole 5/8" Length 19-1/4" Thickness .187 Type Low Lift Width 2-1/2" Crossed From: TO19D MOW MORE 14-4889 TORO / WHEEL HORSE 14-7799TORO / WHEEL HORSE 144889 TORO / WHEEL HORSE 147799 TORO / WHEEL HORSE 345-165 STENS 345165 STENS 50-2545 WINDSOR 502545 WINDSOR 6184 ROTARY 7-06450 PRIME LINE 706450 PRIME LINE 79-1720 TORO / WHEEL HORSE 79-3060 TORO / WHEEL HORSE 79-3061 TORO / WHEEL HORSE 791720 TORO / WHEEL HORSE 793060 TORO / WHEEL HORSE 793061 TORO / WHEEL HORSE 88-5140-03 TORO / WHEEL HORSE 88514003 TORO / WHEEL HORSE 91345 LASER SALES 94-032 OREGON 94032 OREGON A physical address must be provided, NO P.O. BOXES. Thanks for looking!