A&I XHT Non-Notched 112111-02 Mower Blade (Set of 6) - B1BC1208,6 Runners X500 (Engine marked FH721V)

X500 (Engine marked FH721V)

and X534 (engine mark FS730v)

Center Hole 5/8" Length 17" Thickness

S130 100 Series Tractor

A&I XHT Non-Notched 112111-02 Mower Blade (Set of 6) - B1BC1208,6 Runners X500 (Engine marked FH721V)A&I XHT NON NOTCHED 112111 02 Mower Blade (Set of 6) B1BC1208,6 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