Unlike other brands that can use multiple refills, the design of MB ballpoint pens is clearly divided into two basic types: liquid and dry. Many people often ask if these two types of pen refills can be used interchangeably? The answer lies in the shape of both the pen and its refill.
If the dry ballpoint version uses an internal rotating mechanism to bring the pen tip out (the pen refill is not threaded), the water-based ballpoint pen fixes the tip (the pen refill is threaded) and uses a cap to cover the pen tip. Basically, because the ink inside each type of pen refill is different, such a design is needed to limit the ink from smudging and to make it more convenient to use the dry ballpoint versions.
So, if you need to buy a new pen refill, choose carefully to match the pen model you are using! In addition, depending on your preference, the company also has many different nib sizes (F, M, B), and many colors such as blue, black, ... depending on your preference.
