Three New Aftermarket Replacement Mower Blade Made to Fits John Deere 54C Decks Also Fits John Deere Models: GS25, GS45, GS75, GT225, GT235E, GT245, GT2554, GX255, GX325, GX335, GX345, GX355, LX266, LX280, LX280AWS, LX288, S2554, Tricylcer, X320, X340, X465, X475, X485, X495, X500, X520, X530, X534, X540, X575, X585, X595, X700 SERIES, Z-trak F620, Z425, Z445, 22 Tech Info: Length 19″ Width 2-3/4″ C.H. Diameter 0.8″ Thickness 0.2040″ 3 Blades Required for 54″ Deck Fits only 54C Deck Replaces Part Number: M143520, 50-4441, LAB50-0099