1. Package includesThe set of screwdrivers includes 12 double headed screwdrivers, 1 test pen, and 1 handle for the screwdriver head (flat head/cross head/hexagonal/plum blossom/square, etc.), as well as a convenient carrying suitcase. From live work to daily maintenance, various specifications of screwdriver heads can meet your needs. 2. Interchangeable DesignThe tip of the screwdriver head is precision machined and can fit accurately. The screwdriver head can be manually replaced to meet your needs. 3. Convenient to useThe screwdriver set is made of quality chromium vanadium steel, which has strength and toughness, wear resistance, corrosion resistance, and temperature, and is suitable for live circuits below 500V. The insulated electrician screwdriver set is equipped with an ergonomic antislip handle made of plastic material, which is comfortable to hold and safe to use, and can prevent electric shock. 4. Magnetic designThe magnetic screwdriver kit is also very easy to install and remove. Each screwdriver has clear markings, making it easy to identify the head type and size.