8.5mm motor mounts
These are great mounts for 8020 motors, only suggestion would be to make the flange bigger so it can easily take a 3mm plastic screw.
These things are pretty crazy. I busted my frame for my hubsan, so I bought a Caebon-H and these motors. Even with a 700mah pack strapped on it has a ton more punch than before! With a fresh battery it hovers at less than 1/8 throttle. Only complaint was trying to fit them into the motors mounts for the Carbon-H; one of the most stressful things I've done. Pressing them in was super difficult, and I was worried I was gonna slip and rip out a wire or something the whole time! It would be nice if the wires were a bit tougher as well.
These mounts work great, though they are hard to install the motors into. They are a press fit, and the Black edition motors BARELY fit.
It would be nice if they extended down a bit below, and had a slot for motor wire to slip through. That way the bottom of the motor could be protected. That, or have a slot in the top so they can be reversed and used as such.