9 Repl Xht Hd Blades Fits Kubota K5647-34330 K5647-34340 Zd326s

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.