REPLACEMENT XHT BLADES Extreme Hardness Toughness Replacement XHT Lawnmower blade. XHT(Xtreme Hardness & Toughness) blades are 25-40% harder than standard lawnmower blades. Benefits of the HXT blade are sharper and longer lasting cutting edges. More resistance to bending. Tighter tolerances in the aftermarket vs. OEM. XHT blades also offer greater impact toughness. By the way they are made in the USA! Hands down the ABSOLUTE best aftermarket replacement blade on the market! This sale is for 3 replacement XHT blades. ****Replaces the following OEM part numbers: JOHN DEERE TCU34280 Blade specs Center hole: 5/8" Width: 2-1/2" Thickness: .197" Length: 18" PREDATOR COMMERCIAL MULCHERS 54" DECKS John Deere ZERO-TURN: 652B QUIK-TRAK John Deere ZERO-TURN: 652E QUIK-TRAK John Deere ZERO-TURN: 652R EFI MOD QUIK-TRAK John Deere ZERO-TURN: 652R EFI QUIK-TRAK John Deere ZERO-TURN: 652R MOD QUIK-TRAK John Deere ZERO-TURN: 652R QUIK-TRAK Â· Disclaimer: We list model numbers and part numbers for references only. At times the same model may take different parts based on serial number breaks or manufacturers specifications. We list all the specifications on the part (size, width, length, thickness, etc.) and YOU must know what is needed on YOUR application. We canÂt possibly make it more known as to what you are receiving when you purchase.