Reduce mowing time and effort when you use Ultra-High Lift Blades. Each blade is rigorously tested for thousands of hours to ensure they can tackle the most extreme grass-cutting conditions. This blade set is designed for durability and engineered to withstand the tough and demanding jobs your mower experiences day in and day out. For the latest innovations, highest safety standards, and maximum productivity, you can trust in DEWALT. This set includes Original Equipment Ultra High-Lift Blade Set for DEWALT Zero-Turn Mowers and Hydro Walk-Behind Mowers with 48 in., 54 in., and 60 in. cutting decks. For detailed installation instructions, please refer to your operator"s manual.