The Pentel EnerGel Alloy RT retractable liquid gel pen is an exquisitely designed writing instrument for those who want to make a statement. High performance ink technology No Smears, No Smudges, No Globs. Distinctive, textured grip provides greater writing comfort. 0.7mm metal tip writes medium lines. Black Barrel. Pen Sub-Brand & SKU Line: EnerGel Alloy RT Pen Style: Retractable Pen Type: Gel Pen Refillable Yes/No: Yes.