14kt nib unit size 5. ABS plastic feeder and housing.
Size 5, that means that the feeder is 5 millimeters in diameter. Thread housing M6.4x0.5, a drawing with dimensions can be found in the las picture of the gallery in this product.
Customized breather holes are hand cut.
regrindings are not recommended with semiflex.
We do offer a tip regrinding service for your selected nib. To know more about hem click HERE.