Few know it and it is fundamental: for what the hole of the lids of the biromes serves

Although it may seem like a simple detail of design, the small hole found in the lid of many pens (or biromes) performs essential functions both for safety and for the proper functioning of the writing instrument. One of the most important reasons why this hole is incorporated is the prevention of asphyxiation. In unfortunate situations, especially with children, there is a risk that the lid of a pen will be accidentally ingested. In these cases…