"Wheel nut spanner with pre-loaded torque settings for tightening nuts to 100Nm +/- 4%#Ergonomic plastified handle. Chrome-vanadium steel. Detachable double-ended socket, 17mm/19mm.#Safety : your wheel nuts will always be well-tightened thanks to the integral torque action.#Precision : The wrench is pre-loaded to 100Nm (Newton-metres), and will ""break"" witha loud crack to warn you when the correct torquew is reached.#Quality : Tightening your wheel nuts like a professional guarantees security. Your wheels will be neither under- nor over-tightened. "