Wera Adapters. Features: Various adapters compatible with Wera Drive Ratchet Handles as well as other branded similar items Features a ball stop groove to safely lock the socket, knurling at the rear end for manageability during manual use and is constructed from chrome-vanadium Specs: Model:8794 SB Zyklop Extension, Short, 3/8" Description:3/8" 125mm Extension Color:Silver/Black Package:Each