So I am doing more doubleFlats than ever....
Characteristics:
Material Body: polyester
Metals: Yes. Metal clip
Cap: Screw on
Nib: Jowo nº5 stainless steel
Filling system: Universal converter or cartridge
Length (capped): 138 mm / 5.43"
Length (capped): 138 mm / 5.43"
Length (uncapped): 129 mm / 5.07"
Length (posted): NO Diameter (body): 12 mm to 11 mm/ from 0,47" to 0,43".
Diameter (cap): 14 mm / 0,55"
Some picture of the process.