Ariens Replacement Blade - 15 3/16" x 2 1/2" x 0.203" - Replaces 00272900/01600000 - Mulching Blade 355-089 Ariens Replacement Blade - mulching blade with formed edges Replaces (OEM) Ariens 00272900 and 01600000 Fits Ariens mowers with 44" decks (you require 3 of these blades for 44" cut decks) Center hole is 5/8"; Blade thickness is 0.203" 15 3/16" length x 2 1/2" width