new from my shop
a PROFILE USA FINE THREADED BOLT 
for bolting the SPROCKET to PROFILE Crank arms 
this is that PROFILE BRAND 7/16 allen wrench sized BOLT 
dont use a #5 its a 7/16 usa size.. buy a socket style 7/16 allen key wrench 
to keep from stripping these out.

fits PROFILE USA MADE CRANKS ONLY! 
ALL other 48spline profile copy's use a coarse thread. 

 fit USA made PROFILE - they use a finer thread and a 7/16 usa size HEAD.
 
fits all PROFILE usa made cranks - racing , SS, and the rest..



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on ebay since 2000
fast shipper