Description. Matador Orbit. Features: Oil based gel ink; 0.6 mm NS tips with TC ball; Smooth writing; 6 attractive body colors; Shelf life: 2 years; Pack Size: PURPOSE: To provide excellent writing properties even after an oil-based ink ball point pen is left to stand without cap and to draw a smooth writing line with excellent drying characteristics even on any sheet by forming solvent of ink for the pen of main solvent having specific vapor pressure . 015 Low-Viscosity Oil-Based Ink Ball Point Pen Ball point pen with non-slip grip. Especially designed to ensure comfortable writing. Original low-viscosity oil-based ink makes writing smooth. Although suitable for writing in English, thin, low-viscosity ink is originally ill-suited for writing . : MUJI Japan Oil-ink Hexa Ball Point Pen 0.7mm Black 5 pcs : Ballpoint Stick Pens : Office Products Alibaba.com offers 1,453 oil ball pen products. About 40% of these are ballpoint pens, 1% are gel pens, and 1% are other pens. A wide variety of oil ball pen options are available to you, such as metal, plastic, and paper.