Each tool is VDE and GS certified, ensuring excellent insulation performance to effectively reduce the risk of electric shock Premium Materials: Crafted from high-quality materials, this insulated tool set features magnetic tips, 1000V safety certification, ergonomic handles, interchangeable heads, and CR-V steel, ensuring durability and reliability Interchangeable Handles: Easily swap and install tool heads to suit different tasks, this electrician screwdriver set provides excellent control and efficiency during use Durable Plastic Tool Case: The sturdy plastic case stops insulated tools from damage while the well-organized interior compartments keep tools neatly stored, making it easy to find the right tool when needed Versatile Use: The insulated tools for electricians are ideal for a wide range of users, including professional electricians, industrial technicians, and for household or automotive repairs. You'll find the right tools for all your needs in this comprehensive set