This blade set will fit the following Tractors with 48C and 48A Accel Deep decks:
GX255, GX325, GX335, GX345, GX355
LT180, LT190
LX280, LX289
SST18
X300, X320, X324, X350, X354, X360, X370, X380, X384, X390, X394
X465, X475, X485, X495
X500, X520, X534, X540, X570, X575, X580, X584, X585, X590, X595
X700, X710, X720, X724, X728, X729, X730, X734, X740, X744, X748, X749, X750, X754, X758
Z355E, Z355R, Z425, Z445, Z525E, Z535M, Z540M
325, 335, 345, 355D