Replacement flag pole fennel (top) for a household pole that holds a 4ft x 2.5ft flag.
When printed at 100% scale the inner diameter is about 25mm
I would suggest scaling up or down a bit if your pole diameter is significantly different.
The old wood fennel on our pole rotted and fell apart
the pole itself was fine so rather than buying a new pole
I modeled and printed a replacement fennel
it's not a perfect replica but it's close enough to get the job done :)
If you want to make adjustments you can make view and copy this model in OnShape here:http://tinyurl.com/hfwbbuv