Magik Needle Gel Ink Roller Balls, Fine Point Pens, Set of 36 (0.5mm, Black) Super endurable titanium steel tip, which is immune to damage. Pigmented, water-proof, fade-resistant, fast drying ink that is perfect for use of all purposes. See-through pen handle helps anytime monitor on usage of ink. Anti-leak and anti-trap technology, suitable for home/meeting/office/archives use. Super-saving set of 36 pens.