1. The clip design is easy to use and easy to carry 2. Long-life bulbs, high-brightness work, worry-free, durable, and stable brightness 3. Humanized design of anti- 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 zero 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: zero 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 Package Contents: 2 x Voltage Tester Pen Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.