This is designed to match the Cane Walking/Hiking Stick Toppers I've been posting.
It is a 1" coupler so you can make the stick / staff as tall as you want. It's hard to find hardwood dowels longer than 3', which is plenty for a cane - but sometime you may want more of a staff. 4-6' tall.
This coupler allows you to attach two dowels or pieces of dowels together.
Along with some good glue / adhesive - the couple also has a countersunk hole in the middle so you can at least attach one of the dowels with a screw if desired.
It will print without supports and I printed at 40% infill just to make sure it had the desired strength.