• "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