WJIAAA Metal Fountain Pens with 20 Ink Cartridges, 0.5mm Fine Nib luxury Calligraphy Pen Smooth Writing with 10 Black and 10 Blue Ink Refills for Office School Writing Supplies (Stripe Gradient)

• 【0.5mm Fine Nib】This metal fountain pen is 14cm/5.5in in length, featuring a warm yellow gradient body with a bright gold clip and pen ring. Equipped with a 0.5mm fine nib, it offers a moderate line thickness, ensuring clear writing without making the characters appear too small. It easily writes fine characters with a smooth, flowing motion. The aesthetically pleasing color scheme adds a touch of sophistication and creates a relaxed writing atmosphere.
• 【Convenient Ink Refill】Ink refilling is simple and easy to use. To refill, gently insert the ink cartridge into the pen body; a crisp "click" indicates it is in place. Alternatively, you can connect the converter to the nib, dip the nib into the ink, and press the button until the converter is full. These options cater to the different needs of both novice and experienced fountain pen users, providing a variety of choices.
• 【20 Replaceable Dual-Color Ink Cartridges】This metal fountain pen comes with 20 replaceable ink cartridges, including 10 black and 10 blue cartridges, each with an ink capacity of approximately 0.9 ml. The replaceable cartridge design eliminates the hassle of traditional ink-filling methods; simply plug and unplug for a one-second replacement. No refilling is required, making refilling on the go incredibly convenient. Suitable for daily homework, office signatures, and calligraphy practice annotations; the two colors can be used as needed.
• 【3.4mm Standard Ink Cartridge Interface】 This gradient fountain pen uses a universally compatible 3.4 mm standard interface. The inner diameter is 3.4 mm, the outer diameter is approximately 5 mm, the length is approximately 50 mm, and the capacity is approximately 0.9 ml. It is compatible with other universal ink cartridges and converters of the same diameter, allowing you to purchase consumables as needed.
• 【Anti-Slip and Anti-Roll Vertical Striped Body】 The pen barrel features vertically ribbed raised stripes. This design prevents the pen from slipping or falling when your palms are sweaty or your hands are wet. A more stable grip, preventing hand strain during calligraphy practice and extended writing sessions, offering a more secure hold. Anti-roll: Does not easily roll left or right when placed on a table. Suitable for students' daily calligraphy practice, adults' office work, journaling, calligraphy practice, and business signing.

Product List: 1 PCS × Gradient Green Fountain Pen 20 PCS × Ink Cartridges (10 Black + 10 White) Color: Green + Yellow Material: PVC + Stainless Steel Weight: 60 g Product Dimensions: Pen: Length 14cm, Width 1cm 3.4-inch Ink Cartridge: Inner diameter 3.4 mm, outer diameter 5 mm, length 50 mm, capacity approx. 0.9 ml