Overview The Faber-Castell Speed X Ballpoint Pen is designed for writing in fast paced environments. It features a simple cylindrical design with a rubberised grip section and a cushioned tip. Available in three essential colours, the Speed X is an excellent choice for students or professionals. Is it refillable? The Speed X is not refillable, but is designed to last quite a long time before it will need to be replaced. What can it be used for? The Speed X is ideal for everyday tasks such as writing notes, essays, agendas, journals and more. It's essentially designed to cover all of your basic writing needs while providing a super-smooth experience.