Hailing from Czechia, Etsy seller Extreme EDC Shop sells this unusual eXtreme Ratchet. Billed as "The smallest ratchet EDC tool in the world" (how does one verify such a thing?), the stainless steel tool is essentially a bit holder with a hexagonal hole through it, and a ratcheting mechanism hidden inside. Without the bits, they're just 5mm thick.
Here's how they work:
There are multiple versions. The smaller unit can hold two bits, and comes in both a MOLLE-compatible configuration or a keychain version. The hexagonal attachment loop on the latter is sized for a 10mm nut.
The larger of the two MOLLE-compatible units can hold four bits.
Puzzlingly, all three units appear to be the same price: About $33 without the bits, $52 with.
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