DROPOUT 204, NORCO - Norco. - CNC machined 6061 aluminum. - Black anodized finish. - Attaches to frame with (1) M8 Chainring Bolt. - Replaces Norco part #959375-2. ~ Note: For use with 12mm axle - For standard 10mm axle, use DROPOUT-74. - 1 drop out per bag.