A&I XHT 15-1/2", 5PT Mulching Mower Blade (Set of 6) - B1EP1031,6 Replacement Lawnmower Blade(XHT). 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 46" cut. Center Hole 5 point star Length 15-1/2" Thickness .156 Type Medium Lift Width 2-1/4" Crossed From: 145708 CRAFTSMAN 145708 SEARS / ROPER / AYP 152443 CRAFTSMAN 152443 SEARS / ROPER / AYP 159705SEARS / ROPER / AYP 163819 CRAFTSMAN 163819 SEARS / ROPER / AYP 340-030 STENS 340030 STENS 532 14 57-08 HUSQVARNA 532 15 24-43 HUSQVARNA 532 16 38-19 HUSQVARNA 532145708HUSQVARNA 532145708 SEARS / ROPER / AYP 532152443 HUSQVARNA 532152443 SEARS / ROPER / AYP 532163819 HUSQVARNA 6437 ROTARY 9170 ROTARY 95-045 OREGON 95045 OREGON This is an aftermarket product, not an OEM. A physical address must be provided, NO P.O. BOXES. Thanks for looking!