Set of 3 21" Universal Mulching Blade with 5/8" center hole Replaces Bobcat 42180b, PC005, Ferris 1520842, Husqvarna 539-10-1733, Lesco 050170, Scag A48111 Bob-Cat 42180B, Bunton PC005 Ferris 5020842, 1520842 Husqvarna 539-10-1733 Lesco 050170 Scag A48111