The 8 pc. 3/8 & 1/2 in. Drive External Star Deep Socket Set was constructed from chrome vanadium steel for strength and durability. Polished and chrome-plated finish. For servicing inverted E-series fasteners. Suitable for many applications on both foreign and domestic vehicles, including electrical switches on GM, domestic vehicle air bags, V6, and V8 engine camshaft adjustment solenoids, engine and exhaust pipe flange studs. Includes socket storage rail. Sizes include: 3/8 in. Dr.: E11, E12, E14, E16 and 1/2 in. Dr.: E18, E20, E22, E24.