Oily Ballpoint Pen Refill 1pc-Black-Taiwan-made

★Applicable to all series of happy ball pens ■Insoluble in water, smooth writing ■The thickness of the refill is about 0.5 ■The writing length is 8000M +-20% ■Refill made in Taiwan ■International standard refills, easy to replace ■Compatible with ARTEX gel refill specifications, replaceable Note 1: The specifications of this refill are also in line with the size of the "super slippery medium oil ball-point pen refill-German SCHMIDT#easyflow9000M"! Note 2: This refill is the universal size of the international standard, and most of the products of the following brands are applicable: PARKER, Monteverde, Pelikan, Faber-Castell, YAFA, Cartier, Montegrapra, Aurora, Omas, Visconti, or many white-brand pen models. <Remarks> 1. The refill is a consumable product and cannot be returned 2. The refill may dry out after being stored for a long time. It is recommended to use it up as soon as possible after purchase, and do not stock up for too long at a time (it is recommended to use it within half a year after purchase) ■ Viscosity will affect the absorbency of paper and the feeling of writing when writing. The current mass market particularly prefers neutral, Water-based low-viscosity ink (but it does not mean that oily refills are not good, and the feeling really varies from person to person). ■ Writing length refers to the length that a pen can write. Simply put, the longer the length, the more you can write.