The quality of a lawn's cut depends on the sharpness of the blade. When you keep your blades sharp, your grass will see the benefits. Using the Arnold 48 in. High-Lift Bagging Lawn Mower Blade Set will result in a cleaner cut and helps to ensure your grass is greener and more healthy-looking. This replacement lawn mower blade set Fits tractors with 48 in. decks.For detailed installation instructions, please refer to your operator's manual.