Pentel EnerGEL Roller Gel Pen. High performance ink technology combines the best qualities of liquid and gel ink for a super-smooth writing experience. Gel ink dries so fast even left-handed writers love it - no smears, no smudges, no globs. Maximum comfort and control with latex-free grip. 0.5mm tip produces fine lines. 0.7mm tip produces medium lines. Luxor Gloliter Marker Pen (Yellow).