Profile Racing 19mm bolt drive spider

Profile 19mm bolt drive spider

This bolt on style spider is for use with Profile Racing 3-Piece Race Chromoly Crankset with a standard sprocket bolt and 19mm (.75″) BB axles. Chainring can be mounted on inner or outer face of spider for chainline adjustability. Works best with the Profile Internal Bearing Euro BB, American BB, MID BB, or Spanish BB