WREN digital socket is a combination of WREN torque sensor technology and socket, which can reflect the actual torque of the bolt in real time during the bolt tightening process. Its small size and innovative technology make the Digital Socket the perfect calibration tool for checking bolted connections, as well as a calibration device for a variety of torque tools. Works in conjunction with WREN servo electric wrenches to guide correct torque and fast bolt tightening