Replaces: Murray 23180Fits 39" cut mowers Length: 6 1/8", OD: 5/8" UNF: 1/2"-20, two 5/32" keywaysUSE blade adapter STE405-217
Replaces: Murray 55272 Length: 5.960", OD: 5/8" UNF: 1/2"-20, two 5/32" keywaysFits 30" deck with nuts on blade side
OEM Murray# 21024Fits 36" and 42" cut mowersLength: 6.428", OD: 5/8" UNF: 1/2"-20, three 5/32" keyways36" LT tractors with blade engagement on deck