Everyone has a box of weird parts that belong somewhere and probably all of us have shifters that are missing a washer or cam or something, at least everyone I know seems to have those.

I just bought some 6400 shifters (still in original box) but I also got a box with a set of loose pieces that should assemble to complete a 7 speed 6400 set and an 8 speed Dura Ace set.

In the box were two weird pieces I'd never seen before. They aren't 6400, I doubt they are a Dura Ace variation, any ideas? I get photos aren't best but should work for viewing. Can always re-photo if needed





This piece came with a shifter boss cover mounted on tight