Description SPIDER-BOLT ON (SINGLE CHAINRING) -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. -Will only work on 19mm axles. Two styles of single chainring spiders available: -4 Bolt (104MM BCD) for 19mm axle -5 Bolt (110MM BCD) for 19mm axle Colors: silver, black Weight: 4-Bolt: 65g/2.27oz 5-Bolt: 71g/2.48oz
