The Premec Jumbo Ballpoint is a refill made in Switzerland. It uses an oil-based ballpoint ink and is sold in two main body varieties: polypropylene and nickel-plated brass. These don’t only affect the looks of the refill, but also the capacity: the plastic version can hold up to 3500 meters of ink where the metal version can hold 5000 meters (in 0.7 mm, but 2000 m in 1.0 mm).
These refills uses a tungsten carbide ball for longevity and are often sold under the label of another brand, which is one of the reasons Premec is not a more popular brand name.
The plastic version can hold up to 0.75 grams of ink where the metal can hold 1.1 grams, accounting for the difference in writing length.
The Jumbo Ballpoint — which Premec calls the oil-based version of the refill — adheres to multiple ISO standards including ISO12757-1
Premec Jumbo Ballpoint Information
|0.7 mm, 1.0 mm
|Blue, Black, Red, Green
|Max Body Width
|Refill Length (cm)