Type A vs. Type B Down Tube Shifter braze-on bosses
I have been trying to find a simple photo that can be easily used to identify the difference between a Type A and Type B braze-on.
in addition, A uses a 5mm screw while a B uses the narrower, uncommon 4.5mm screw.
Note: top frame is Type B, bottom is Type A
I hope this helps
Last edited by Het Volk; 09-17-23 at 10:36 AM.