MTD Genuine Parts 46-Inch Spindle Assembly for Lawn Mowers and Zero Turn Mowers Fits Most 46" Lawn Tractors and RZT Mowers 2010 and after Includes (4) 710-1260A Self-Tapping Screws and (1) 712-0417A Blade Nut Sealed Ball Bearings Help Prevent Wear and Corrosion Star-Shaped Shaft For Secure and Exact Fit with OEM Blade Replaces O.E. #918-04865* / 618-04865*