Fits side discharge tractors with 46-in decks (2010 and after). Replaces part # 942-04268/742-04268. Includes: 2 mulching blades, molded plug, mounting hardware and instructions. The blades produce high turbulence that allows the grass to be repeatedly cut and re-cut into smaller pieces. Mulching blades help reduce raking or bag clippings. Sharp-edged blades cut grass cleanly and make their way through grass more efficiently, reducing overall mowing time, effort and creating a healthy looking lawn. Blades should be inspected and sharpened or replaced every season.