Set OF 6, Mulching Blades Replace 180054, 173921, or 193920 Blades, 48" Deck on Craftsman, Poulan, Husqvarna Price is For a 6 quality Rotary Made In USA Mulching blades. (2 sets of 3 for 48" Decks) Made in USA. 16-3/4" long, 2-1/2" wide, .187" Thick, 5 point star mounting hole. These blades mulch better than FSP mulching blades. Use on 48" decks, Craftsman, Poulan, Husqvarna.