Replacement XHT Lawnmower Blade. XHT (Xtreme Hardness & Toughness) blades are 25-40% harder than standard lawnmower blades. Benefits of the XHT 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. 3 blades are needed for 60" Cut. Dimensions: Center Hole: 29/32" Length: 21" Thickness: .250 Width: 2-1/2"
