Germany SCHMIDT EasyFLOW Oil-Based Rollerball Pen Refill - Value Pack of 4, Available in 2 Colors #EasyFLOW9000

**★ Universal International Standard Refill ★** **Germany SCHMIDT EasyFLOW Oil-Based Rollerball Pen Refill (#EasyFLOW9000) - Value Pack of 4** **Available in Black / Blue** **Single purchase listing available here ►** https://www.pinkoi.com/product/HHsHTTab Introducing the revolutionary new EasyFLOW 9000 refill from SCHMIDT, Germany! This refill uniquely combines the best qualities of hybrid and oil-based inks, addressing the common drawbacks of hybrid inks such as drying out, skipping, and short writing length. Formulated with low viscosity ink, it offers an exceptionally smooth writing experience that is sure to impress from the first stroke. ■ Product Specifications: . Tip opening diameter: φ2.5mm . Ball diameter: φ1.0mm . Ball material: TC Tungsten Carbide . Refill length: 98.1mm . Refill tube diameter: φ5.80mm . Refill tube material: Metal . Writing length: 28000m (-/+ 30%) . Ink color: Available in Black / Blue Note 1: This refill is dimensionally compatible with ARTEX oil-based ballpoint pen refills (international standard size)! Note 2: This refill uses a universal international standard size and is compatible with most products from the following brands: PARKER, Monteverde, Pelikan, Faber-Castell, YAFA, Cartier, Montegrapra, Aurora, Omas, Visconti, and many other non-branded pens. <Remarks> 1. Refills are consumable items and are non-returnable. 2. Refills may dry out over time if stored for extended periods. It is recommended to use them promptly after purchase and avoid stocking up for too long (suggested usage within six months of purchase). 【Refill 101 | Understand Refill Differences in Minutes】 Let's first differentiate between the most common ballpoint, hybrid, and rollerball pens. The key difference lies in the ink composition: oil-based, hybrid, or water-based. Each ink type offers distinct writing characteristics. Here’s a general classification based on ink type and pen name: **Ballpoint Pen ------ Oil-based or Hybrid** **Hybrid Pen ------ Hybrid** **Rollerball Pen ------ Water-based or Hybrid** Now, you might wonder: **So, is a "hybrid" ink considered for a ballpoint or a rollerball?** An excellent question! Putting aside jargon, hybrid ink combines the properties of both oil-based and water-based inks. Therefore, you could refer to it as a hybrid ballpoint or a hybrid rollerball. A more precise term is simply "hybrid pen." Similarly, our new "oil-hybrid" ink combines characteristics of oil-based and hybrid inks, hence our naming it an "oil-hybrid rollerball pen," or you can simply call it an "oil-hybrid pen." **■ Characteristics of the 3 Ink Types:** https://live.staticflickr.com/65535/52063201128_1870b284ff_o.jpg ■ Viscosity affects ink absorption by paper and the writing feel. Currently, the market generally prefers low-viscosity inks like hybrid and water-based (though this doesn't mean oil-based refills are inferior; personal preference varies greatly). ■ Writing length refers to the total distance a pen can write. Simply put, a longer writing length means more words can be written.