Application: 1990's and newer Peterbilt, Kenworth, Freightliner, Ford, Volvo, International, Western Star, Mack and various trailers with 33mm diameter lug nuts and at least 3 exposed threads beyond the insert distance from the base which includes the lug nut (so you need lugs to show at least 3/8" above the nut to catch the treading inside the nut cover)