John Deere Riding Mower Blade XHT 21-1/4″ Part No: A-B1JD1091 LT150 LT160 LT170 LT180 SST15 SST16 X300 X300R X304 X320 X340 Z225 AM137327 M154061 12380 330-728 92-110

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...