Prezzi da $23.65
A 3" frame for Nano cams, accepting two boards in 20x20 or 25x25, and have a 20x20 rear mount point (even a few mm slideable).
The arms are thick, the build quality decent, the 3D prints fit, it comes with a rubber pad and a strap and is also pretty light.
Not in the realm of perfect are the cheap screws and the "slippery" standoffs. I normally would reduce this to 4 stars, but for 20 bucks it's still a no brainer.
With this frame you can build a 1404 based 4s650 quad with ~180g AUW and get pretty good performance.
Last week I bounced cam first into a rock and the TPU nose just bounced off the quad and I kept flying. So its also pretty sturdy.
Like I said. A no brainer.