XHT (Xtreme Hardness & Toughness) blades feature a unique steel that incorporates boron, carbon,manganese, and other materials that ensure its strength. The blades are heat treated with the patented and independently tested Marbain heat-treating process. This process makes the blades 25% - 40% harder than standard lawnmower blades, making them the longest-lasting, safest, and most impact Resistant lawnmower blades on the market.

Compatible with Exmark Mower Blade XHT 18" 15/16" Part No: B1EM1883 103-6392 103-6402 103-6402 103-6402-S 1036392 1036402 1036402S 11495 355-291 355291 92-027 92-030 92027