This is the brand new Pickle design called the PicklePick. It is a more refined and radical design of my good old toothpick style frame called the Pickle. 
This one is thinner ant stiffer by design and have even better flight caracteristics.

This version is for 3 hole motors only (e.g. Amaxinno 1103, Happymodel EX110x)

Here are the specs :

Open Source design available on Thingiverse (https://www.thingiverse.com/thing:3857976)
2.5 inch / 65mm true X Frame (102mm wheel base)
3 hole / 6.6-9mm motor mount (usually happymodel 110x and Amax 1103 3 hole, check your motors specsheet)
Whoop AIO FC or 16x16 stack
~5.5g