5/16-inch x 3-inch standard (SAE) and metric nut driver

5/16-in x 3-in Metric and SAE Nut Driver Combo allows you to loosen or tighten nuts with the convenience of a screwdriver. The handle features Speed, Torque, and Tactile Zones for the optimum turning in application, while the chrome bar finish helps resist corrosion . They also have engraved tips for easy tool identification.