Prototype propellers for a small quadcopter. Set of four, two clockwise and two counterclockwise. 1mm shaft hole, but it will need to be drilled out due to WSF limitations. 70mm diameter. A previous revision that wasn't even as beefy as this was plenty strong for my use. These have a pretty low advance ratio because they're designed for hovering.
I can generate these with custom sizes, aspect ratios, and advance ratios, so contact me if you're interested.
See my blog post
for more info.