The LT4165 is a 20 piece factory reproduced master wheel lock key set for the removal of all 2nd generation 2011-present BMW factory wheel lug nut locks. Identical to factory set – uses same factory part numbers. Packaged in a custom blow molded carrying case. NOTE: Same as Mercedes “B” Wheel Lock Master Key Set. Covers 20 of the 60 Mercedes Benz/BMW master wheel lock keys. NO WARRANTY – CANNOT BE USED WITH AN IMPACT GUN.