Insulated Allen Screwdrivers for Working at Height Secure Tools offer a large selection of insulated Allen screwdrivers for working at height. Available in a range of measurements to suit the task, Allen screwdrivers are designed to let you work on any number of construction jobs safely. Their hexanol head makes them the ideal tool for screwing and hexanol bolts and screws While each Allen screwdriver includes a hard-wearing open ring attachment point. This lets you tether the screwdriver to your harness and prevent tool droppages when working high up. Furthermore, it’s comprised of top-grade insulated moulding, giving you an Allen screwdriver that’s extremely effective in protecting against electric shock and arcing up to 10,000 volts,