Standard OEM style mulching blade 15-1/2" length, 5 Point Star center hole, 2.25" width, .149" thick 1/8" offset, 1" air lift replaces AYP, Sears, Roper 145708 / 152443 /  532145708 / 532152443  / 917145708 / 917152443P

• Use 3 for 46" cut

Alternate Blades:

• For standard OEM high lift mulching blade use Oregon® 95-052 blade
• For Gator® G3™ mulching blade use Oregon® 95-614 blade
• For Gator® G5™ mulching blade use Oregon® 595-614 blade

See this and related products on the AYP 44", 46", 48", 50", & 54" Decks (3 Blades) Illustrated Parts List