REPLACES: ARIENS/GRAVELY MODELS 915158 915164 ZTXL54 54" DECKS. This is the deck belt and is .5" x 145.5" long made with kevlar cords. This sale is for one BRAND NEW REPLACEMENT belt. This is an exact fit belt made to the exact OEM (original equipment manufacturer) specifications. This is not a "will fit" belt! You will see several listings for this belt online and please compare apples to apples. This is not some industrial or poly belt that will work on your mower but a belt made for you mower! Disclaimer: We list model numbers and part numbers for references only. At times the same model may take different parts based on serial number breaks or manufacturers specifications. We list all the specifications on the part (size, width, length, thickness, etc.) and YOU must know what is needed on YOUR application. We canÂt possibly make it more known as to what you are receiving when you purchase.