John Deere GX00166 Mulching Mower Blade is crafted with a blend of carbon and boron, ensuring exceptional hardness for a durable, long-lasting sharp edge that resists breakage. This John Deere equipment manufacturer (OEM) part includes one blade designed specifically for optimal mulching performance. Whether you need assistance selecting the right John Deere part or accessory, John Deere specialists are available Monday through Friday from 8:00 AM to 5:00 PM EST to provide expert support. Hartville Hardware strives to accurate part recommendations sourced from reliable systems, though compatibility and parts availability may change without notice. For any uncertainty regarding the correct part, their Customer Support Team is ready to help. Model Number: GX00166