Description: - Made of high quality material,durable. - The detector cannot test voltage s, metal walls or deep parts. - Metal test: 15mm diameter , 24mm test - suitable for use in interior decoration structures, can detect the position of wires in , when voltage are , the instrument will flash . - Size:Approx.150x78x24mm/5.91x3.07x0.94inchPackage Includes:1 Piece Metal Voltage DetectorNote:1. Please allow slightly error due to manual measurement.2. Due to between different monitors, the picture may not reflect the item.3 shopping!