Slightly curved it fits in the 8mm tubes, It will take a Parker style refill. Aprox .765 long from the shoulder to tip. Used it in the Euro style 8mm pens or the Custom Sierra style pen.
Straight lines and a shoulder, it fits the 8mm tubes. Parker style refills.
This nib has a textured/ patterned shoulder, it fits the 8mm tubes, Parker style refills.
Straight lines with 6 recessed areas for inlay. 8mm tubes, Parker refills
8 mm tubes
7mm tube stepped shoulder for Cross style refill
6 small recessed areas as a design
Straigh taper wiith no step for 7mm tubes