Uni-ball POSCA Marker 5M 1.8-2.5 mm Bullet Shaped Paint Marker Pen | Reversible & Washable Tips| 16 Shades, Pack of 16Package Includes : uni ball Posca 5M Bullet Shaped Marker Pen, Tip Size 1. 8 2. 5 mm, Mechanism Click off Cap, Ink Color Multicolor, Size Pack of 16. It contains water based pigment ink which is lightfast, water resistant & will write on almost any surface. Posca markers are non toxic, which means our pigment formula does NOT contain alcohol like other markers, each Posca marker is water based which means its alcohol free, waterproof & still