Each home should have at least one screwdriver to tighten screws that come loose or need replacement. The Klein 661 is a screwdriver with a 4-inch shank and #2 square tip 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 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!