MTD Blade Adapter Kit, Replaces MTD Blade Adapter Part Number 753-0583 or 748-0300. Includes Hardware, Blade Bolt, Bolts/Nuts/Lock Washers. Blade Adapter Kit includes blade bolt/washer, 2 bolts/nuts/washers to mount blade to adapter. 1" ID Splinned. Made to meet or exceed OEM specifications.