Replacement for broken foot on a clothes airer. This includes a single foot (end cap) and double foot. The internal diameter is 7mm, and the spacing is 17.5mm between centres.
I also made some clothes airer clips (joints) which are available here:
If you need this a slightly different internal diameter, it could be scaled by a few percent. For example: 6.5mm would be about 93% scale and 7.5mm would be 107% scale. The SketchUp file is included for ease of editing.
This is probably best printed in ABS for strength.
0.2mm layer height, 0.8mm shell thickness
Printed in ABS with 100% infill for strength