Metric Offset Insulated Angle Ring Wrenches for Working at Height Secure Tools provide a wide selection of metric offset insulated angle ring wrenches for working at height. Available in a range of metric measurement sizes, offset angled ring wrenches feature a bend on each end, helping you access sunken nuts or bolts easily. Manufactured using only the highest-quality materials, our offset angled ring wrenches are tough and built to withstand year after year of hard-wearing use – even in tough work environments. Furthermore, the incorporation of top-grade insulation means you’re protected against electric shock and arcing up to 10,000 volts. In addition to all that, each metric offset insulated angle ring wrench comes with a fitted solid open ring attachment point, giving you a fixed place securely to tether the tool harness and prevent droppages when working from height.