TOOTHED MULCHING BLADE FITS AYP 532138971SPECIFICATIONS: LENGTH 21" CENTER HOLE 5 PT. STAR WIDTH 2 1/2"FITS:AYP REQUIRES 2 FOR 42" DECK VIKING REQUIRES 2 FOR 42" DECK REPLACES OEM: 21546095, 127843, 134149, 138498, 138971, 138971X431, 139775, 532134149, 532138971, 532139775, HU22004, 127843, 134149, 138498, 138971, 113312X, 521981601, 532127843, 532134149REPLACES AFTERMARKET:302-400, 0101-06125, 101-015, 12563, 14392, 301304, 496-900, 504-00132, 504-00150, 589544, 596-600, 596-900, 6109-004-2012, 6125, 6189, 6422, 7-04797, 7-04982, 7-06319, 7-08500, 814076Warning:Lead-Nickel-Cancer and Reproductive Harm