2 USA Blades will fit JOHN DEERE M170642 X330 X350 X354 Z335M Z345M Z345R 42"

2 USA PREDATOR BLADES JOHN DEERE M170642 X330 X350 X354 Z335M Z345M Z345R 42" Why ProPartsPlace?Fastest Shipping!Reasonable Prices!Great Feedback!Excellent customer service!REPLACEMENT PREDATOR MULCHING BLADESMADE IN THE USA!! Not cheap imports!!!XHT (Xtreme Hardness & Toughness) blades feature a unique steel that incorporates boron, carbon, manganese, and other materials that ensure its strength. The blades are heat treated with the patented and independently tested Marbain heat-treating process. This process makes the blades 25% - 40% harder than standard lawnmower blades, making them the longest-lasting, safest, and most impact resistant lawnmower blades on the market.Hands down the ABSOLUTE best aftermarket replacement blade on the market!Replaces the following OEM part numbers:JOHN DEEREM17064242" CUTSCenter Hole: 51/64"Width: 2-1/2"Length: 21.420"Thickness: .197"John Deere RIDING MOWER: X350John Deere RIDING MOWER: X354John Deere RIDING MOWER: X370John Deere ZERO-TURN: Z335M