Ayp/ Craftsman/Sears Blade Adapter No. 532421176. This is an original equipment blade adapter. Replaces part numbers 421176 and 189179. *Design has changed on this part, if adapter will not fit into the debris sheild the shield will need to be changed to the new style.
AYP / Craftsman / Sears Blade Adapter fits all new style mulching mowers. Size: 7/8" depth, 7/8"diameter. Made of powdered metal. Replaces AYP part numbers 851514, 850977, and 581547901.