The 115 is my personal favorite. It is intended for 2S 2.5 inch props. The 115 size give just enough room to keep the camera low and keep the area under the props clear with 2S 300 mah packs. The 3mm frame is thicker than typically seen for this size to control the resonance without resorting to braces/struts that add material obstructing the props and like to hang up in trees.

Version 4.1 slightly increases the strength at the middle of the motor mount.

Frame: 115 mm MTM, 3 mm thick

FC: 16 x 16 stack, 25.5 x 25.5 AIO square orienation, 25.5 x 25.5 AIO whoop orientation 

Motor: 2 mm on 9 mm diameter

Props: 2.5 inch

Canopy: Zip-tie Canopy or the new Printed canopy.(see the canopy tab for the file https://ko-fi.com/quad66/shop)

Weight (aproximate): 5.8 gm