I am actually very disappointe...
I am actually very disappointed in this cartridge. I normally use the g2 .38mm
or blue pilot acroball 0.5mm to take notes. Each of these pens last me about a
month of college note taking before it dies. This summer I am taking a summer
class for 6 weeks. For the first 2 weeks I've used my go-to acroball pen. I
bought the Hi-Tec-C 3 Multipen body and a red, blue, black cartridge. Upon
using, it glides flawlessly and really smooth across the paper. However, after
about 3-4 lectures, I've noticed that the cartridge is already half empty. Much
to my disappointment, the life of this pen is extremely short. It is not going
to last more than 1 week for a college student.