The Ultimate Strap Clip

Here's a very sturdy version of a 25mm strap clip: It comes in two options:

Option 1) One part is fixed and you need to sew the strap to attach it; the other is adjustable.

Option 2) Both parts are adjustable.

The adjustable parts are inspired by the beautiful "25mm Strap Buckle Adjuster Thingy, Double Sided" by Simpo151.
It has been designed with FUSION360, and in order to be printed with no support. You just have to print the male part horizontally oriented and the female parts vertically.