Pen box 20 pcs with thin blue line 0.5mm, this is pens for writing smooth , rollerball pen for guest book

Specifications:

Tip ball size 0.5mm.
Ink volume 0.12 - 0.15 g.
Ink is long writing (approx): 1,600m -2,000 m
Ink meets the standards: ASTM D-4236, ASTM F 963-91, EN71 / 3, TSCA.
Weight 9 grams / pcs.

Feature:

High quality pen tip.
Ball bearings made in Switzerland.
Ballpoint pen with trigger.
The place of the finger area with a triangular section that fits the handle helps reduce slippery when writing frequently.
Made in Vietnam.