Product name: (ver.1) Heki-tamenuri（碧溜）　[no.07003] (Dorsal Fin)
Price: US$1,250
Total weight: 26.0g
Body weight: 18.0g
Total length: 150.0mm
Barrel length: 145.0mm
Max diameter: 17.0mm
Barrel material: Ebonite
Description: This model has a fin on the cap that acts as a roll stopper. It is designed with the image of a knife.
It has more weight and stability than the regular 15mm pens.
The total length is the same as Portable size, Ryogiri, Decapod series, and Neostandard. The length without cap will be the same as Long size and Ryogiri.

The base color is the "Heki-iro" which was made after many trials and errors. Heki-iro is a middle color between blue and green. And "Tamenuri" has the characteristics of translucent amber color like being sucked in, so you can clearly see how the lacquer has accumulated.
The combination of shuai urushi lacquer and heki-iro base color create mysterious and beautiful greenish amber finish.