The Croxley Fineliners 0.4mm 10 Pack delivers an exceptional assortment of vibrant, water-based ink colours perfect for technical drawing, detailed bullet journaling, and daily school writing. The durable, metal-clad fiber tips ensure smooth ink flow and precise lines without bending or spliting under pressure. Packed in a compact wallet style case, these ventilation-capped pens are designed to resist rapid drying out and prevent ink bleeding through standard notebook paper.