shaking

Anyone know the technical name for the T column ? my mechanical asked me to change it but we can't find something with this name in the catalog. anyone can help urgently plz :shaking head:

I went to the Calgary Premier last night and it was the perfect tonic for a winter night. It isn't earth shaking or even any revelation to long-time riders but still well worth seeing! On Any Sunday: The Next Chapter https://www.youtube.com/watch?v=I5nglGD8AVI