The fountain pen 580 AL R comes with a benchmark piston ink-filling mechanism and has all detachable parts. The clear demonstrator barrel allows you to see your ink color and remaining ink level. It has a silver aluminum grip section and a screw-cap. The aluminum is enhanced with a subtle matte finish and circular engravings in the grip and cap area. It comes with a stainless steel nib and is presented in a modern clear display case.

The idea behind the TWSBI Diamond 580 was to go back to basics and capture the simplicity and elegance of traditional writing instruments. In recent years, the development and modernization of writing instruments have resulted in traditional writing instruments, such as fountain pens, falling into obscurity. It was TWSBI's goal to bring the past back to life by creating a traditional fountain pen that even modern-day society can appreciate.

The TWSBI Mini AL comes with a benchmark piston ink-filling mechanism and has all detachable parts. Like many other TWSBI fountain pens, it features a crystal clear acrylic barrel so you can see your ink level, and a clear cap. It is enhanced with a silver aluminum grip section and piston mechanism. It is completed with silver trim and a silver stainless steel nib.

TWSBI's belief is that it is important to allow the user to disassemble and reassemble the pen and completely experience the traditional aspects of owning and using a fountain pen. These pens also come packaged with a wrench and silicone grease.