A great clip for a single body pen, raised panel at the top
Slightl larger and heavier than 4048
Largest and heaviest of the three great for a large cap or thick bodied pen.
The triangle series with an inlay area. Great for initials on the top panel
Roller Ball click pen, This was an experiment on whether a click version using a roller ball refill would be practical. It works but the refill drys out quickly without a cap. You have to have a spring both at the back of the refill and at the front. The back gives the cushion when writing and the front pushes it backup into the body.