Notched Hi-Lift Blade replaces Cub Cadet/MTD/White & Troy-Bilt OEM Part#'s: 191-0917, 1910917, GW1910917, GW-1910917. 18" Length, 2" Width, 0.209" Thickness and 3/4" x 9/16" Oblong Center Hole. Fits Troy-Bilt Models: 34087, 34087C, 34089, 34089C, 34342 and 34343 wide cut mowers. Stens# 310-540, 310540, A&I# B1MA2422. Requires (2) blades for 33" Decks. Refer to your owners manual to match by OEM Part Number.