This little drill bit will allow you to use the Original Tiny Whoop 31mm propellers with any 1mm shaft (beta65x)
Some brushed motors also have a 1mm shaft (Bald Eagle) which also requires drilling the props.
There's a little ring around the shaft for a good grip to help turn it easily. It only takes a few turns to go straight through the prop.
Be warned!! These bits are small and are easily damaged. Store in a safe place when not in use or the end will break!
Here's my easy process to make any of the Tiny Whoop Props work with any motors using the 1mm shaft. I just gently twist the bit into the hole under the prop. No big deal if you drill too far and out the other side, I personally like my props to sit as low as possible so I generally go all the way through.