The Wera Joker 6004 VDE Insulated Spanner Tool is a high-quality, versatile tool designed for electrical applications. It features a self-setting mechanism that automatically adjusts to the size of the fastener, eliminating the need for manual adjustments. The insulated design provides protection against electric shock, making it safe for use in environments where live electrical components may be present. This spanner tool is built with Wera's renowned German engineering and quality, ensuring durability and reliable performance. It is suitable for a wide range of professional and DIY tasks, offering convenience and efficiency for various fastening needs. The spanner tool is part of the Wera Joker series, known for its innovative features and ergonomic design.