16×16 Mounting Holes
F3 Betaflight FW Flight Controller
5a Brushless BLHeli-S ESCs
FrSky Rx Built-In
These are Discontinued item that is NEW IN PACKAGE some Packages are missing Header Cards.
Information is hard to find on these stacks, however they are 2s capable (be sure to check all components used are as well in build), feature built in Receiver (FrSky), and run BL Heli-S firmware ESCs.
Great for Micro Builds.