Tombow Centennial Ultra Rollerball Pen, Silver, 1-Pack Centennial Limited Edition Roller Ball Pen that is uniquely designed and unlike any other Tombow pen Waterproof, Fast-drying Pigment Ink Exquisite anodized brushed aluminum body with an ultra soft grip Tungsten Carbide Rolling Ball for Smoothness that won't smear, skip, or fade Fine point, 0.5mm ink that is refillable with all Tombow ROLL Pen Refills.