Replaces OEM numbers 127843, 138498, 138971, 138971X431, 532138971, 53-21278-43, 53-21384-98, 53-21389-71, 532 13 84-98 and 532 13 89-71 Also fits Craftsman CMXGZAM110136 Includes 2 blades for many 42-in cut Poulan, Husqvarna, and Craftsman mowers Each blade measures 21-in L x 2-1/4-in W 5-Point star center hole Manufactured to meet or exceed all OEM specifications Check your owner’s manual to verify the OEM number of the blade being replaced matches one of the OEM numbers provided for this item Proudly made in the USAFor All Your Outdoor Power Equipment Needs has ALL of your small engine replacement parts. Blades, filters, trimmer line, belts, chainsaw parts, engine parts, wheels, tubes and MORE!! Read more USA Manufacturer W