I’m not talking about a hex key that extends in length but one where it can collapse in on itself to increase in size.
I did some digging online but all I could find was a patent from a company called TeleHex but it kind of sounds like they came and went in the mid 2000s. They’re website doesn’t seem to exist.
I feel like it could save space in my pocket compared to a typical hex key set or a multibit.
I was hoping I could at least find a bootleg version on Ali Express.
I’ve never seen or heard of a telescoping Allen set.
The smallest usable set I know of is the Leatherman bit kit.
If you don’t carry a Leatherman, their bits do fit most regular, 1/4" hex drivers.