This listing is for a full set of seven (7) LOWER baler belts, 8-in x 74.5-in, for a John Deere 510 round hay baler. They are high-quality 3-ply belts, made in the U. A, with texture on one side and endless with no seam. They are new and unused. This baler also uses nine (9) 4-in x 484-in upper belts. I have five (5) of the upper belts available for sale, in the same new unused condition, in a separate listing. Certain modified versions of the 510 use the 10-in or 12-in belts, so check your specs!