Used in conjunction with a key cabinet socket / ratchet 3/8 (Peddinghaus 9017000000) to ensure a scooter servicing 125. No worries for now on the sensitivity and reliability of the product but I remain vigilant the view of other comments. Pay attention to the use, as this key is not to release, so we must gently shake until rattling. Manual in English, but looking 2 minutes, we understand the principle: loosening after, adjust the torque on the shaft and tighten the end.