Each home should have at least one screwdriver to tighten screws that come loose or need replacement. The Klein 660 is a screwdriver with a 4-inch shank that is compatible with most head receptacles. It is specially treated to resist heat and is covered with chrome to withstand corrosion. The handles are designed for a stronger and a more comfortable grip. Klein continues to be the #1 favoured manufacturer of hand tools in the electrical, mining, and general industry. Since 1857, Klein Tools is devoted in helping individuals and professionals to accomplish fine craftsmanship by developing first-class ergonomic hand tools. Get Kleins trusted products here at PlumbersStock!