Gedore RED 3300243 Convertor 3/8in Female to 1/2in Male

Matt chrome-plated
For hand-operated sockets
Square drive as per DIN 3120 - C 10, ISO 1174, with ball retention groove
Coupler based on DIN 3120 - A 12.5, ISO 1174, with ball lock
Chrome-vanadium steel
Additional socket extension turns the convertor into a sliding T-bar with slider