This blade set will fit the following Tractors with 48C decks
SST18 LT180 LT190 LX255 LX266 LX277 LX279 LX280 LX288 LX289 GT225 GT235 GT235E GT245 GX325 GX335 GX345 GX355 X465 X475 X485 X495 X575 X585 X595