Test Screwdriver, Voltage Detector Pen Light Circuit Tester Electric Test Pen Screwdriver 

Features: 
1.They are designed for electricians. Automatically detects and indicates and standard voltage allowing broad application.Can be used as a screwdriver. 
5.Designed for detection of standard voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets and wires. Also excellent for detection voltage in security, entertainment, communications, environmental control, and irrigation systems. 

Specifications: 
Product Name: Circuit Tester 
Material:Plastic,Metal 
Product type: Contact type 
Color: Transparent,Silver