The wrench is made from chromium-vanadium CrV steel Tightening force 40-210 Nm It fits every 1/2 " bolt head. It comes with 3 sockets (17, 19, 21mm) and a 125mm extension It has a lock that stops the tightening direction being changed by accident Wrench arm length 47 cm. Certificates CE, TUV/GS MEASUREMENTS (case) 490 x 80 x 60mm WHAT THE KIT CONTAINS: A 1/2 " torque wrench with a lock A 125 mm 1/2 " extension 3 sockets A case Instructions for use