1. The clip design is easy to use and easy to carry 2. Long-life , high-brightness work, worry-free, durable, and stable brightness 3. Humanized design of anti-slip handle, feel comfortable 4. Chrome vanadium steel magnetic bit material 5. Ergonomic design, practical and convenient without installing batteries 6. Identify the live wire: the live wire indicator is on, the wire indicator is off 7. Strong adsorption to efficiency The strong magnetic design of the head can adsorb screws and small metal parts to work efficiency Item model number: B04 Product Name: Electrician Test Pen Measuring range: fire wire identification Product process: bulb Applications: It can be used in electronic factories, electrical appliances, automobile maintenance, households, etc., and has a wide range of uses. color:Grey Material:Metal Contents: 2 x Voltage Tester Pen Only the above content, other are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.