Pentel EnerGel-X Retractable Liquid Gel Pen, (0.7 mm), Medium Line, Black Ink, Box of 12 (BL107-A)

High performance ink technology combines the best qualities of liquid and gel ink for a super-smooth writing experience
Liquid gel ink dries so fast even left handed writers love it – no smears, no smudges, no globs
Latex-free grip for maximum comfort and control
0.7mm metal tip writes medium lines
Refillable with any color EnerGel refill
Limited Lifetime Warranty