Pentel EnerGel PRO Permanent Gel Pen, (0.7mm) Medium Line, Blue Ink - BLP77-C The first true quick-drying, super-smooth, Permanent gel pen Triple the protection! - fraud-proof, fade-proof and water-proof Permanent, pigmented gel ink is perfect for important documents Quick-drying, smooth-writing performance that consumers expect from energel Latex-free grip for writing comfort and control 0.7mm metal tip writes medium lines Refill: LRP7