These are the bolts that thread into the nut strips that slide into the rear frame rails on 1984-2001 Cherokee XJ's. They are used to attach the gas tank skid plate and trailer hitch. Includes (8) bolts: 10.9 Class (metric equivalent to Grade 8) hardened yellow zinc plated flange bolts. High quality direct OEM replacement. These work with OEM and aftermarket nut strips.