1/2" Torsional Multiplier Wrench w/ Case Features: Heat Treated Alloy Steel Construction. With the big trans-ratio, it will allow more output torque while using less force. Torque Output: 800 Nm Trans-Speed Ratio: 1:16 1/2" Square Drive 3 sockets in each set: 17mm, 19mm, 21mm. Blow Mold Case With Handle For Storage.