Why ProPartsPlace? Fastest Shipping! Reasonable Prices! Great Feedback! Excellent customer service! REPLACEMENT XHT BLADES Extreme Hardness Toughness 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 aftermarket vs. OEM. XHT blades also offer greater impact toughness. By the way they are made in the USA! Hands down the ABSOLUTE best aftermarket replacement blade on the market! This sale is for 3 replacement HEAVY DUTY XHT blades. Replaces the following OEM part numbers: KUBOTA 76539-34330 70000-00602 70000-25001 75000-25001 K5645-34340 Center Hole: 1-1/8" Width: 2-1/2" Thickness: .250" Length: 20-9/16" FREE SHIPPING!!