Starlac Industries supplies Tester Type Screw Driver, EE - 614. Starlac Industries is an ISO 9001: 2000 certified manufacturer and exporter of scientific instruments. The Tester Type Screw Driver is used to check the polarity and presence of the AC or DC mains voltage. It is attached with indicator bulb of Neon. It comes with transparent plastic handle and also has pocket clip. This Tester Type Screw Driver can be kept in pocket while doing other task.