I think 3 peeps have got the answer, in a brief description, but it's not enough to secure these lovely little item.

big clue coming up in min, but you may need to surf to find the answer.

harris top and bottom yokes?

Adjustable head angle

Robin, am clueless woman - do I get extra clue??;)

am I totally on wrong track with the marchesini caliper adjuster brackets?

C:puzzled:

**** this i'm off :rolleye:

Tis late Mr SPS - we all suck at this so mebbe it's time for the clue?

Well, I suck at this ...

From motowheels?

So that would be Cycle Cat then?

motowheels clipons, or billet yokes...