It was a replacement mower deck belt for a 54" craftsman. Used the OEM part number to find what I hoped was the right belt online and by golly it WAS! With 6 pulleys it was interesting getting it to loop properly, especially since the old belt had to come completely off first [when in doubt look at the diagram], but it most definitely was the right one, AND it definitely isn't slipping! So all is good. Shipped quickly, and shipped via method I paid for. So again, service and accuracy counts big time in my book for a first time purchase.