Logo Screw Color Upgrade Kit

Excellent cap

I have Prometheus pens. One uses black ink. One blue. Now I can really tell them apart. These are also a very pretty additions to really great pens.

Usual High Standards!

Nice addition for my two pens. Everything as advertised. Time for a new larger format flashlight!

Very helpful to have

Helps me identify what color ink I have in each of my pens, hope to see a green one coming out.