Oregon 95-621 AYP/Sears/Husqvarna/Poulan Gator Mulcher G3 Replacement Lawn Mower Blade 21 in 21" Length, 5/8" Center, 2.5" Width, 0.187" Thickness, 3/4" Lift The angle of the Gator teeth redirects the air flow to keep the clipping directly in front of the cutting edge. The longer the clippings remain in front of the cutting edge, the finer the size of the clipping Replaces AYP/Sears 175064, 11878, 165833, 176135, 189028, 406706, 406712 Replaces Husqvarna #532175064, 532-1750-64, 532189028, 532-1890-28, 532406712, 532-4067-12, 539111878, 539-1118-78 Replaces Craftsman/AYP/Husqvarna/Poulan 580258101 and 580258102