John Deere M127673 Mulching Lawn Mower Blades, Set of 3 are crafted with a unique blend of carbon and boron, delivering exceptional hardness that ensures a long-lasting sharp edge without breakage. These blades undergo rigorous testing by John Deere to superior wear resistance and durability. This set includes three John Deere Equipment Manufacturer (OEM) blades designed to fit a wide range of 48" deck models, including the 717E Z-Trak, 7H17 Commercial Walk Behind, and various models from the 325 to Z645 series. If you need assistance finding the right John Deere part or accessory, specialists are available Monday through Friday, 8:00 AM to 5:00 PM EST, by phone or email. Hartville Hardware strives to provide accurate part recommendations sourced from reliable systems, but compatibility may change without notice, so contacting customer support is advised if uncertain. Model Number: M127673