Current hex bit driver stock.
Precision torque tools are built for accuracy when it counts. A precision torque tool is only as good as its results. And, with proper maintenance and regular recalibration, our rigorous safety standards ensure you never have to question their accuracy.
What makes the difference? Proto® precision torque tools are individually crafted, each one from a single piece of solid, high-grade steel, giving you a better, stronger, more dependable tool.
Our precision torque products come in three series for all tolerance ranges, from automotive to commercial air. Because we know you won’t tolerate anything less than a tool as dependable and accurate as ours, no matter what job you’re doing.