Gedore 2090 4 1/4 97 mm Extension Silver

Amazon

For hand-operated sockets with square drive with locking pin Material: vanadium steel Colour: silver With ball stop Surface: chrome, Weight: 0.09038952742 Pounds, Manufacturer: Gedore

Zoro Tools

For hand-operated sockets with square drive as per DIN 3120, ISO 1174, with ball locking device GEDORE vanadium steel 31CrV3, polished, chrome-plated * not standardised