The MTD 74204056C is a genuine 21-inch mulching blade designed for optimal cutting performance on various MTD brand lawn mowers. This high-quality blade features a 6-point star center hole and is engineered to effectively mulch grass clippings, returning nutrients to your lawn. It is a direct replacement for OEM part numbers 742-04056, 742-04056A, 742-04056B, 942-04056, 942-04056A, 942-04056B, and 942-04056C, ensuring a perfect fit and reliable operation.