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