The Klein 612-4 Terminal Block Screwdriver’s precision machined tip provides an exact fit for terminal block screws. The terminal block screwdriver has a shank length of 4-Inches and width of 1/8-Inch, and an overall length of 7 3/4-Inches. The 612-4 screwdriver has a tip up to 19% stronger than its competitors. The tip provides 76% higher torque value than the required ASME B107 standard. The cushion-grip handle offers greater torque comfort. Since 1857, Klein Tools has manufactured the world"s finest hand tools. Today, Klein Tools is the 1 choice among professional tradesmen. We manufacture more than 3,000 tools and accessories, including pliers, cable and bolt cutters, wire strippers, voice-data-video tools and testers, fish tapes, conduit benders, drill bits, insulated tools, gloves and many other high-quality products. Klein Tools" dedication to quality and innovation continues with products available for professional tradesmen worldwide.