BOSCH Bell-Hanger Drill Bit for Wire System

Bell-hanger drill bits are long bits that make holes through walls, studs, flooring, and other surfaces so wires can be pulled through these surfaces for hooking up televisions, telephones, alarm systems, computer networks, and other equipment. They are also known as installer bits, feeler bits, and fishing bits because they have a hole near their tip for threading wire onto the bits to pull it through the surfaces after drilling.