With checking device, it can effectively stop the rotation of jack and stranded wire when they are tensioning.
With the tool anchorage head which can be used repeatedly inside, it can clamp and loose the gripper automatically.
It can self-lock anchoring and pressure-hold anchoring when the jack is tensioning, when it needs to be pressure-hold anchoring, you should add a transformer to the top of jack and a FL type diverter valve in the oil way in your configured pump .
Structure diagram
1. stop nut 2.anchor-return connect body 3. anchor ring 4. tool gripper