The Gardner Bender GK3 is a tester kit. This kit includes voltage, continuity and receptacle testers. The voltage tester tests polarity and voltage in outlets. With the help of a continuity tester you can indicate the continuity on wires, fuses and light bulbs. Also, if you need to detect wiring condition, you can use the receptacle tester. All three devices are easy to use and understand.
The Gardner Bender 3-Piece Electrical Tester Kit includes one #GCT-204 Continuity Tester, one #GRT-500A Receptacle Tester , and one #GET-100A 90-300 Volt AC/DC Circuit Tester. These are the most common circuit testers for electrical troubleshooting; having all three means you can conveniently and effectively test your electrical system. Gardner Bender has 50 years of experience making professional electrical tools and supplies of consistently superior quality, so you can count on high-performance products at a fair price.