An Insulated T-Handle Hex Key 3.5mm is a type of wrench that is used to tighten or loosen screws with hexagonal sockets. The T-handle provides a comfortable and secure grip, making it easy to use with one hand. The insulation helps to protect the user from electrical shock, making it a safe tool to use when working with live electrical wires.- VDE approved – individually tested to 10,000V for safe working up to 1,000V.- Premium quality S2 steel blade, tempered and hardened for exceptional strength & durability- Dual component, ergonomic handle for comfort and control- Insulated handles protect users from electrical shock.- High-quality insulation- Ergonomic T-handle for comfortable grip