Old 03-19-02, 10:06 PM
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thats the first thing i ever heard of blackjacks only made for profile cranks. Mine fits perfectly on the spindle. Its 22mm, that might be the same as a profile, i dunno though. It came with an adaptor so it must be meant for 2 types of cranks. One of my friends had a imperial on his specialized crank, and another friend had a whip-it on his primo crank.
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