Linesman pliers: useful for holding bolts, nuts, and other fasteners, as well as cutting thick gauge wire. Needle nose pliers (a long, narrow grasping instrument used for tiny parts or in tight locations) with a cutting edge Flat head screwdrivers are used to insert flat head or slotted screws into material. A thin metal rod with a flat end used as a lever to drive small items such as nails or staples. Lineman's pliers: similar to linesman's pliers but with a hook instead of a jaw for more efficient gripping of heavy materials or when working with wires up to 1/4 inch in diameter. Screwdriver: a driver with a flexible shaft designed to fit into a hole containing a screw thread. It can be hand or power driven. Soldering iron: a tool used to melt solder and join electrical components together. It has a handle with a heating element attached to one end and a tip made of carbon steel with a coating of silver to prevent oxidation (this prevents the tip burning while creating a good connection with the component). Tweezer: a pair of bent wires or rods joined at their ends and used for picking small objects off surfaces or squeezing through holes or openings. Wire cutters: any of several types of tools used to cut lengths of wire. They vary in size from hand-held units to large machines.