Uni ball SigNo 207 Gel Rollerball Pen Retractable Fine 0.7mm Tip 0.5mm Line Black Ref 9004600 [Pack of 12]

Amazon

COMFORT GRIP - Sleek, elegant look and feel that is comfortable and easy to grip. RETRACTABLE NIB - Prevents the nib from drying out and allows leak-free storage. GEL UNI SUPER INK TECHNOLOGY - For an unsurpassed super smooth writing experience. Fade resistant and tamper-proof. POCKET CLIP - Fits neatly and safely inside your pocket ready for use at a moments notice. FAST WRITING - Perfect for note taking and journaling.

Euroffice

Retractable gel ink rollerball will help you create perfectly smooth handwriting. A great-quality all-rounder, the pen features uni’s water resistant, fade resistant and tamper-proof Super Ink. Ideal for all your important written work.