Here my GARDENA water lance / Gießstab holder. I also designed a pipe guide, but in my case it was not necessary to mount it.

See also my other GARDENA holders:
https://www.printables.com/de/model/881222-gardena-holders-collection

I recommend to print the model with 4 walls, especially for outdoor use with PLA.

The holes are designed for Countersunk SPAX Ø4mm. Ø3mm or Ø3.5 will also be sufficient. I recommend using A2 Stainless Steel screws.