When you mulch your lawn, the clippings are cut into very fine pieces that are returned to the grass. This helps to keep your lawn healthier, as it returns nutrients to the soil. And you won't have to spend your time raking or bagging the clippings. Replacement mulching blade for Craftsman, Husqvarna, Huskee, and Poulan walk behind lawn mowers. 5/8" round center hole. Replaces OE# 114886, 141114, 157101, and 335256.