Pentel Gel Ballpoint Pen Refill for Energel X, 0.5mm Needle Tip, Blue Ink (XLRN5-C) Pentel gel ballpoint pen refill for Emerge x, 0.5mm needle tip, blue ink Smooth gel ballpoint pen, Emerge from Japanese stationary Brand Pentel. Now Emerge is available as Multi-Function or mult-color pen and also affordable Series Emerge x Model: XLRN5-C