MULCHING MOWER BLADE FITS JOHN DEERE GX22151SPECIFICATIONS: LENGTH 21 3/8" CENTER HOLE 7 PT. STAR WIDTH 2 3/4" THICKNESS 0.164FITS:JOHN DEERE 102, 115, 125, 135, D100, D110, D120, D130, LA100, LA105, LA110, LA115, LA120, LA135, X110, X120 AND Z225; REQUIRES 2 FOR 42" DECK REPLACES OEM: 578431911, AM137328, AM137333, AM141033, GM149625, GX21694, GX22151, GY20850REPLACES AFTERMARKET:330-441, 11593, 11594, 192-106, 212-0456, 228460, 469-318, 504-00189, 5602, 578431909, 578431911, 92-106, B1JD6016, B1PD5016, DE-2215, JD6016Warning:Lead-Nickel-Cancer and Reproductive Harm