Updated version of my original handlebar extender. Made a bit beefier and with slots for attachments. (Quad lock style phone holder - soon)

It's 300mm long (210 between handlebars and aluminium pipe) so it is not interfering in holding the handlebars.

Some brass threaded inserts and M3 bolts are needed for assembly.
I takes a 25mm aluminium pipe/profile (painted matt-black) to be cut to desired length.

Designed for 25,4mm handlebars.

Smartphone quad lock - inspired holder: https://www.thingiverse.com/thing:3466026

Caps for the pipe are included in the version 1.