This genuine MTD 7420671A lawn mower blade, also known by the Kramp part number 7420671A, is a left-hand mulching blade designed for 41-inch cutting decks. It measures 530mm in length, 57mm in width, and 3mm in thickness. The blade features a 6-point star-shaped center mounting hole and two 8.5mm outer holes with a 63.5mm center-to-center distance. This blade ensures efficient cutting and mulching performance for various MTD, Cub Cadet, Gutbrod, Yard-Man, Bolens, Massey Ferguson, and White Outdoor lawn tractor models.