John Deere 637 Tandem Disk, Pin Hitch, 3-Bar Harrow, Scrapers, 29' 3" Working Width, Adjustable Depth, Adjustable Tilt, 9" Blade Spacing, Approximately 21 1/2" - 22" Blade Diameter (See Photos), 11L-15 Tires, Hydraulic Lift & Fold, SN: 1N00637XHA0740486