The front hub for mountain bikes is a 20mm barrel hub that needs to be converted into a 15mm barrel hub for easy use. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
I could be wrong, but I seem to remember something about the 20mm TA standard having a different brake mount location. May be worth looking up. Or just stick the adapter in there and see if it works!
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