One of the most durable (I think the most durable) fpv frames on the market.  This is a 3.5" bashable FPV freestyle frame.  Currently designed for the DJI O3 video system, but will have 3d prints soon for other video systems.  If you want to fly, crash, repeat, and don't like to repair, then this is the frame for you.  It's heavy, but it will take a beating!

Details:

4mm arms

2mm top, bottom, and sandwich plates

12x12 motor mounting

20x20 stack mounting

Recommended setup:

4s 600mah

1606 3300kv motors

Gemfan 3630 Hurricane Props