GM Shock Absorber Socket Double-D socket holds shock piston stem while deep socket is used to remove the nut. Internal dimensions: .33(8mm) long x .25(6mm) wide x .3(7.75mm) deep. 3/8 square drive. 31.75mm OAL. 18.9mm wide at the Drive end of socket. 13.8mm wide at Double-D end of socket. 8.10mm x 6.10mm Double-D Size Aftermarket Applications: Used for installing turbo studs on:. 2011-2020 Ford 3.5L Ecoboost F-150. 2015-2020 Ford Expedition/Navigator. 2017-2020 Ford Raptor Also used for installing exhaust manifold flange studs on:. 2015-2020 Ford 5.0L F-150 A430 No -