Pentel HyperG Retractable Gel Roller Pen, 0.5mm, Permanent Black Ink, 3 Pack (KL255BP3A) Low viscosity ink is Triple Safe: People Safe, Check Safe, Earth Safe Diamond-cut barrel design with silver accents Made of 57% recycled plastic and refillable with Pentel KLR5 refills Durable, metal tip writes 0.5mm fine lines Pack includes 3 pens