9 XHT USA MARBANE STEEL BLADES HUSTLER 52 CUT MACHINES 783753 785436 795526. REPLACEMENT XHT BLADESExtreme Hardness ToughnessReplacement 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. […]