This sale is for one BRAND NEW REPLACEMENT belt. This is an exact fit heavy duty made with kevlar belt made to the exact oem (original equipment manufacturer) specifications. REPLACES: JOHN DEERE TCU26905 on Z520A with 54" decks I don't list the size of the belt because other folks just copy our listings and sell cheap belts but if you need to know the size please email us and I will give you the dimensions. But, if you have a Z520A with the 54" deck this will be what you need. Â· 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.