Cello Writing Instruments & Containers Pvt Ltd manufactures Ball Pen with Metal Dip. Cello Writing Instruments & Containers Pvt Ltd offers wide ranges of gel ink pens in different ink. Ball Pen with Metal Dip is available under the brand name- Liquid Express, is used by school kid, college student, young professional, senior executive etc. This Ball Pen with Metal Dip is available in three colors- blue, black and red. This Ball Pen has a metal dip and foil. A transparent cap over brightly designed body gives it a designer look.