WYNN'S W0183 AC100V-500V TESTER (-)
Test Pen / Test Light is a tool for testing whether an object has electricity, how to use it with the thumb / forefinger touching the end of the handle and the tip of the screwdriver touching the workpiece. If the light is on it means there is electricity and vice versa if the light is not on it means there is no electricity.
*Overall length: 5.5" (140mm)
*Screwdriver bits: (-) / Slotted
*Screwdriver bit diameter: 3.0mm x 65.0mm