Pentel Knock Gel Ballpoint Pen Energel X, 0.7mm Regular Triagle Tip, Black Ink (XBL107-A) Pentel knock gel ballpoint pen Emerge x, 0.7mm regular triangle tip black ink, black body in Retail package 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: XBL107-A