Types of Blood Gel Pens Medium Tip Cognitive Surplus

Ink Type:  Gel ink

Pen Type:  Rollerball

Tip Size:  .7mm

Material:  100% Recycled Plastic

Pack Size:  Each pack contains 6 pens.  

 

Each pack contains 6 unique colors:

• Hemoglobin
• Hemocyanin
• Chlorocruorin
• Hemerythrin
• Vanabin
• Biliverdin