FPR Stainless Steel Nib - Size #6 - EF Ultra Flex (Nib Only)Maximum expression from a steel flex nib The FPR #6 EF Ultra Flex nib is designed for serious expressive writing. It delivers an extra fine hairline under light pressure and opens into broad, dramatic strokes with controlled flex. This is one of the most responsive steel flex nibs available, built for users who want vintage style expression without using vintage nibs. What set's it apart Extreme line variation from hairline to broad stroke Very light