I designed this adapter for LED blinkers for some Triumph motorcycles like the Speed Triple and others. 

It is based on this idea:
https://www.britishlegends.fr/en/indicator-adapters-triumph.html

I saw some other designs online that didn't fit my motorcycle correctly.

In my case, I printed it with PLA and sanded it to improve a little bit the looks.

The different files represent the blinker thread offset. These files allow that when you tighten the blinker, both are facing forward. I used 0 and 180 for my blinkers.

Used for a motorcycle repair video on my YT channel (in Spanish):