This is a replacement handle for a snow shovel with a ¾" (19mm) wooden handle.
The onshape model is here: https://cad.onshape.com/documents/0371a7fb1f624ac95a2da835/w/191aebaa6733cefc3100a5a8/e/100eca43835f3e2b8491792c
I printed this laying down with PLA support out of PLA+
I make now guarantees that it will be strong enough and not shatter with the first use…