Tighten or loosen screws with precision using this EAB "Stay Sharp" Square Impact Screwdriver Bit. Specially designed for high-torque impact drivers, this industrial-quality screwdriver bit is made of heat-treated S2 spring steel with a hardened tip for extra strength. The reduced, rounded shank improves balance and reduces vibration, while the milled finish ensures an optimal fit. Torque tested to ensure a higher breaking point. Recyclable for a better environmental footprint.