Tighter tolerances in the aftermarket vs.
BLADE-MOWER, 15-1/2", 5PT, MULCH, Type: Medium Lift, Notes: (3) blades for 46" cut. XHT (Xtreme Hardness & Toughness) blades are 25-40% harder than, Web Notes: standard lawnmower blades.156, Width: 2-1/4", Web Notes: Replacement Lawnmower Blade(XHT).5" x2.