This 25-piece hex key set provides a complete range of sizes for servicing SAE and Metric internal hex fasteners. The imperial selection includes 12 keys from 1/16 to 3/8" (1.6 to 9.5 mm), while the metric series contains 13 keys ranging from 1.27 mm to 10 mm. This combination of sizes supports maintenance and assembly tasks across a variety of industrial equipment and mechanical components.

This 25-piece hex key set provides a complete range of sizes for servicing SAE and Metric internal hex fasteners. The imperial selection includes 12 keys from 1/16 to 3/8" (1.6 to 9.5 mm), while the metric series contains 13 keys ranging from 1.27 mm to 10 mm. This combination of sizes supports maintenance and assembly tasks across a variety of industrial equipment and mechanical components.