These are replacement feet for the GETFPV.com QAV 400 model quadcopter available here:
It's not too costly to buy the delrin versions, but they can get spendy after a few crashes - with these you have pretty much an endless supply :)
These raise the base about 55mm off the deck but I provided the skp files in case you wanted to stretch them. It's designed to be thinner than GetFPV's Delrin models to help with aero dynamics.
You'll need 2 mini zip ties to attach each foot - the holes are 3mm wide so make sure you have the right size.
QAV 400 Feet by Mochaboy
available under a
Creative Commons - Attribution - Share Alike