Why ProPartsPlace? Fastest Shipping! Ships same day or next business day!! Reasonable Prices! Great Feedback! Excellent customer service! REPLACEMENT XHT BLADES Extreme Hardness Toughness MADE IN THE USA! Don't be fooled by other cheap imported blades you see on eBay! Buy from home! The XHT blades are made with MARBAIN which is what makes them THE BEST BLADE ON THE MARKET! Increased hardness (between 48-52 on the Rockwell Hardness Scale), without brittleness Greater yield strengthÂthe strongest mower blades on the market Better impact toughness (ANSI-S483 compliant) Increased resistance to bending Higher wear resistance Reduced weight Faster start/stop Less wear on PTO clutch break Lower fuel consumption Last longer and need to be sharpened less frequently Our patented MARBAIN material is a durable, cost-effective alternative to abrasion resistant steel and other manufacturing materials This sale is for 2 replacement USA XHT blades. These blades are made by Fisher Barton who make ALL of John Deere's OEM blades! Replaces the following OEM part numbers: JOHN DEERE M153118 AM137324 (The blades that come in kit) M84472 AM141039 2 NEEDED ON 38" MODELS Fits SEVERAL different model John Deere mowers! 170 175 180 185 240 245 260 265 285 320 GT242 GT262 GT275 LT133 LT150 LT155 LT160 LT166 LT180 LX172 LX173 LX176 LX178 LX186 LX188 STX38 X300 Center Hole: 7 LOBE Width: 3" Thickness: .197" Length: 19-1/2"