Screwdriver extension adapter has an elastic holding ring consisting of a sleeve, slip ring, spring and ring

摘要

A screwdriver adapter (2) has an elastic holding ring consisting of a sleeve (21), a slip ring (22), a spring (24) and a ring (23). The sleeve (21) has a hexagonal socket at one end for a prior art link rod (1) with a circular positioning groove (11), and steel ball in a hole which is presented to a matching hole in the sleeve (21).