Cementex nut drivers are truly unique. Our thoughtful design allows access to tighter locations than any other nut driver on the market. We cover the shaft of the driver with two-layers of insulation and the head with a single 10000 V tested layer. This allows us to provide the same double insulation protection and safety guarantee you've always known from Cementex. Superior insulating material and precise construction of our base tool allow us to provide the slimmest insulated nut driver available so you are never sacrificing safety and protection.