QualityParts From Oregon That you can depend on. 21" Length, 5/8" Center, 2.5" Width, 0.187" Thickness, 3/4" Lift: 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; 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; ; Oregon Equipment Parts 95-621 Blade Ayp Gator G3