Original Equipment Xtreme Mulching Kit with star center hole Blades for Cub Cadet 50 in. Lawn Tractors and Zero-Turn Mowers, 2015-2020, OE# 942-05052-X, 742-05052-X For Xtreme mulching performance. The unique blade helps chop grass clippings finer than with standard blades. This can lead to bagging up to 50% more grass and less visible clippings when mulching. Sharp-edged blades cut grass cleanly and make their way through grass more efficiently, reducing overall mowing time and effort. Ideal for finely cutting grass clippings and redistributing them back into your lawn, providing essential nutrients. Contents include three Xtreme mulching blades, baffle and mounting hardware. Refer to the Parts list label under the rider hood or under the zero-turn seat mounting bracket for original equipment parts.