🔩 Torque Your Way to Perfection! Crafted from special heat-treated alloy steel for unmatched strength. Box end wall thickness designed for maximum access to hard-to-reach fasteners. Quality craftsmanship you can trust. 12-point design fits 4, 6, and 12 point fasteners seamlessly. Engineered for effortless torque adjustments. 2-inch measurement 9PC set Heat-treated steel The Stanley Proto J5100 Torque Adapter Set is a 9-piece collection designed for precision torque calibrations, featuring durable heat-treated alloy steel construction and a versatile 12-point design for enhanced access to various fasteners. Measuring 2 inches from the square drive center, this set is perfect for both professional and DIY enthusiasts, proudly made in the USA.