The GEARWRENCH GWR80420 is a 3/8" drive hex bit socket in a 5/16" SAE size, engineered for reliable fastener engagement in tight spaces where a standard hex key or wrench won't reach. Built for professional and industrial use, this socket delivers precise torque transfer on hex fasteners across automotive, machinery, and MRO applications.
Designed to fit standard 3/8" drive ratchets and extensions, this hex bit socket integrates seamlessly into your existing socket set for quick, efficient work on transmissions, differentials, and other critical assemblies.