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 your mower! If you want the cheapest belt you can find we have that too, but if you want the belt that will stand up to the application you need then this is it! Your belt WILL HAVE THE part number on the belt and this is the actual belt pictured and not a generic photo! Replaces: JOHN DEERE M151277 .5" x 92.5" Wrapped made with kevlar John Deere RIDING MOWER: X300 (Traction Drive SN 040001>) John Deere RIDING MOWER: X320 (Traction Drive SN <150000) DISCLAIMER: We list model numbers & part numbers for your reference. NOTE that you may have the same model with a different deck or serial number or configuration. We list the EXACT size of the belt so if you are unsure measure yours. Please do not tell us we sent you the wrong belt when we send you the exact dimension belt we have listed. It is your responsibility to know what you need to order and all we can do is ship what you order. Thank you!