Germany SCHMIDT Ultra-Smooth Hybrid Gel Ink Rollerball Refills - Value Pack of 4 - Black/Blue Available

**★ Universal International Standard Refills ★** **Germany SCHMIDT Ultra-Smooth Hybrid Gel Ink Rollerball Refills (#EasyFLOW9000)** **Value Pack of 4 - Black/Blue Available** https://live.staticflickr.com/65535/52063180886_a4c316efdc_o.jpg https://live.staticflickr.com/65535/52063672230_125cd5cfcf_o.jpg **Also available as a single purchase ►** https://www.pinkoi.com/product/CkFM9umQ Introducing the latest innovation from Germany's SCHMIDT: the EasyFLOW 9000 hybrid gel ink refill! This refill masterfully combines the best of both gel and ballpoint ink properties (refer to the "Refill 101" section below for details), while addressing the common drawbacks of gel ink, such as drying out, skipping, and a shorter writing length. Featuring a proprietary low-viscosity ink formula, it offers an exceptionally smooth writing experience with superior ink flow that you'll fall in love with instantly! **★ Please Note! ★** These refills are designed for "Happy" brand ballpoint pens. For refills compatible with "Happy" brand rollerball pens, please refer to the following listings ► https://www.pinkoi.com/product/B9xx7hda https://www.pinkoi.com/product/tjfWTUvD ■ Product Information: . 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: Black/Blue available Note 1: These refills are dimensionally compatible with ARTEX oil-based ballpoint refills (international standard)! Note 2: These refills are a universal international standard size and are compatible with most models from the following brands: PARKER, Monteverde, Pelikan, Faber-Castell, YAFA, Cartier, Montegrappa, Aurora, Omas, Visconti, and many other unbranded pens. <Important Notes> 1. Refills are consumable items and are not eligible for return or exchange. 2. Refills may dry out over time if stored for extended periods. It is recommended to use them as soon as possible after purchase and avoid stocking up for too long (recommended usage within six months of purchase). 【Refill 101 Q & A | Understand Refill Differences Instantly】 Let's first discuss the most common pen types: ballpoint, gel, and rollerball. The primary difference lies in their ink composition: oil-based, gel, or water-based. These different ink compositions result in distinct writing characteristics. Here's a classification of ink types and their corresponding pen names: **Ballpoint Pen ------ Oil-based or Gel Ink** **Gel Pen ------ Gel Ink** **Rollerball Pen ------ Water-based or Gel Ink** At this point, you might have a question: **So, is "gel" ink considered for ballpoint or rollerball pens?** Well, that's a great question! Without getting bogged down in complex terminology, simply put, since gel ink combines the characteristics of both oil-based and water-based inks, whether you call it a gel ballpoint or a gel rollerball is a matter of common usage. A more "professional" term is simply "gel pen." Similarly, our newly introduced "hybrid gel" ink also combines the features of gel and oil-based inks. Therefore, we've tentatively named it a "hybrid gel rollerball pen," but you're welcome to simply call it a "hybrid gel pen"! **■ Characteristics of 3 Ink Compositions:** https://live.staticflickr.com/65535/52063201128_1870b284ff_o.jpg ■ Viscosity affects how the ink is absorbed by paper and the writing feel. The current popular market preference is for gel and water-based inks with low viscosity (but this doesn't mean oil-based refills are inferior; personal preference truly varies). ■ Writing length refers to how far a single refill can write, meaning a longer length allows for more writing.