Case IH MRX690 Disk Ripper, 13' Wide, Pintle Hitch, Scrapers, 12" Spacing, Spring Shanks, 5-Shanks, Hydraulic Raise/Lower Front Disk Gang, Rock Flex Gang, Hydraulic Raise/Lower Rear Gang, Rock Flex Gang, Walking Tandems, Lights, Manual Fore/Aft Adjust, Front Blades Measure Approx. 23.25", Rear Blades Measure Approx. 23.75", 12.5L-15AL Tires, NOTE: One Cracked Blade, SN: JFH0028757