http://great3d.com/xiaomi-yi-tilted-...-not-included/
http://www.thingiverse.com/thing:825873
https://www.thingiverse.com/thing:1734716
http://multirotorspares.co.uk/Xiaomi...-not-included/
http://www.thingiverse.com/thing:1027862
http://www.thingiverse.com/thing:1474602