Smart Color Art 40 Pack Blue Gel Pens, Retractable Medium Point Gel Ink Pens Smooth Writing for School Office Home, Comfort Grip(20 Pens with 20 Refills) PROFESSIONAL QUALITY:20 blue gel ink pens with 20 blue gel ink refills,total 40 pack!None of toxic, acid free, lead free, and all the materials are eco friendly. Safe using! It's made of high end refill, Which contains superior ink and hard Tip (tip size 0.7mm) that makes the blue gel ink pen no smearing,writing smoothly and using durable! MORE INK:The ink pipe diameter of each refill is 3.6mm,which means ink capacity of each pen is twice compared to others.Besides,we use transparent oil to avoid leakage of ink inside and it is purer than colored one. EXCELLENT DESIGN:Pocket clip is convenient and easy to carry.Comfortable grip is good for you long time writing.The tip of each pen is sealed with wax to avoid being dry. DIFFERENT USAGES:Suitable for all kinds of places, such as offices, schools, families; best choice for students writing and homework,exams, office staff writing records. And pens are ideal for writing in Writing Pad, White Paper, Notebooks, Ruled Paper, Copy Paper, Pocket Folder and so on. Get it and Enjoy it! You have our 100% satisfaction guarantee. No more worries.