{"@context":"https://schema.org","@type":"Product","name":"TWSBI ECO Fountain Pen - Cosmo w/ Onyx","image":["https://cdn.shopify.com/s/files/1/2603/2528/files/TWSBI-ECO-Cosmo-Onyx-OW-2.jpg?v=1765487916","https://cdn.shopify.com/s/files/1/2603/2528/files/TWSBI-ECO-Cosmo-Onyx-OW-1.jpg?v=1765487916","https://cdn.shopify.com/s/files/1/2603/2528/files/TWSBI-ECO-Cosmo-Onyx-OW-3.jpg?v=1765487916","https://cdn.shopify.com/s/files/1/2603/2528/files/TWSBI-ECO-Cosmo-Onyx-4.jpg?v=1765487916","https://cdn.shopify.com/s/files/1/2603/2528/files/TWSBI-ECO-Cosmo-Onyx-1.jpg?v=1765487916","https://cdn.shopify.com/s/files/1/2603/2528/files/TWSBI-ECO-Cosmo-Onyx-2.jpg?v=1765487916","https://cdn.shopify.com/s/files/1/2603/2528/files/TWSBI-ECO-Cosmo-Onyx-5.jpg?v=1765487916","https://cdn.shopify.com/s/files/1/2603/2528/files/TWSBI-ECO-Cosmo-Onyx-6.jpg?v=1765487916","https://cdn.shopify.com/s/files/1/2603/2528/files/TWSBI-ECO-Cosmo-Onyx-7.jpg?v=1765487916","https://cdn.shopify.com/s/files/1/2603/2528/files/TWSBI-ECO-Cosmo-Onyx-3_821c3d66-f423-498b-98ce-f9b47d4a3328.jpg?v=1765487916","https://cdn.shopify.com/s/files/1/2603/2528/files/TWSBI-ECO-Nib-Onyx-OW.jpg?v=1765487916"],"description":"

The TWSBI ECO fountain pen boasts an incredible value with its piston filling system and affordable price. Like many other TWSBI fountain pens, it features a crystal clear acrylic barrel so you can see your ink level, and a blue marbled cap and finial. The pen cap has an inner cap to ensure a perfect seal when stored away. It is completed with black onyx trim and a black stainless steel nib.

TWSBI's belief is that it is important to allow the user to disassemble and reassemble the pen and completely experience the traditional aspects of owning and using a fountain pen. These pens also come packaged with a wrench and silicone grease. Neither of these accessories are intended to be used immediately, as they are for long-term care and maintenance. Additionally, please use extra care if you choose to disassemble the nib and feed, as the feed is very fragile.

We do our best to photograph the pens to show how they will appear in person, but due to the nature of the material, there will be some variation in the pattern seen here. This adds an element of uniqueness to the pen, with no two patterns being exactly the same. We cannot honor special requests.

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TWSBI ECO Fountain Pen - Cosmo w/ Onyx(Medium)

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