The developments boards are two-side breadboard adapters for LQFP32/48/64 IC's, equipent with adaptable power supply circuit, HSE and LSE crystal circuit, reset button, and a custom 10-pin JTAG connector. SMD size for passive components is 0805. The adapter between 20-pin JTAG and this custom connector is also included in the set.
For more details, see https://github.com/mkulesh/stm32DevelopmentBoards