Insulated Adjustable wrench for Working at Height Here at Secure Tools, we stock top-quality insulated adjustable wrenches designed for use when working at height. Built for use in various construction, rigging and marine industries, our insulated wrenches include useful tether points to help prevent dropped tools, resulting in fewer accidents on-site and other workplaces. Plus, each adjustable wrench is specifically built to withstand extreme impact and abrasion, as well as being flame-retardant. Their injection moulded design and high-temperature production deliver a tool that’s firmly bonded as one piece. While their incredible durability makes them the perfect insulated adjustable wrench for working at height through the toughest conditions.