Sealey 1/2" Drive Hexagon Socket Bit 1/2" 4mm

The Sealey 1/2" Drive 4mm Hexagon Socket Bit is the smallest size in this professional range, perfect for accessing compact hexagon fasteners in confined spaces. This 4mm socket is particularly useful for precision work on smaller components, electronics enclosures and delicate mechanical assemblies where larger tools simply won't fit. Constructed from forged Chrome Vanadium steel with a precision S2 steel bit, this socket delivers reliable performance despite its compact dimensions. The heat tr