Imperial Insulated Angle Ring Wrench for Working at Height Secure Tools offer a wide selection of imperial insulated angle ring wrenches for working at height. Available in a range of sizes, angle ring wrenches let you work comfortably in both confined spaces and on flat surfaces. Manufactured using only the highest-quality materials, our insulated angle ring wrenches are robust and built to deliver decades of use – even in tough work environments. Furthermore, the inclusion of top-grade insulation is effective protecting in against electric shock and arcing up to 10,000 volts. Plus, each imperial insulated angle ring pipe wrench has a solid open ring attachment point too, letting you tether the tool to your harness to prevent accidental droppages when working from height.