
Tom's Studio Lumos Pro Duo Tip Fineliner Pen - Brass
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The Tom's Studio Lumos Pro Duo Tip Fineliner in Brass is a masterfully engineered, sustainable response to the endless sea of disposable plastic technical markers. Conceived by a product designer and craftsman who refused to let fully functional pen bodies sit empty or go to the landfill, the Lumos Pro Duo is a professional-grade lifetime tool. It shatters the cycle of proprietary plastic cartridges by using an infinitely refillable design that lets you use your favorite bottled fountain pen inks. Acclaimed fashion artist David Downton calls the Lumos "brilliant," noting that the balance, range of nibs, and satiny ink lay down so flawlessly that "the drawing (almost) does itself."
The defining evolution of this model is its highly versatile Duo Tip configuration. Featuring active tip placements on both ends of the pen, it allows you to load two different line weights simultaneously—such as an ultra-fine 0.1mm fineliner on one side and an expressive brush tip on the other. Wrapped in a raw, unyielding Brass body, this instrument offers deep, anchoring stability that balances perfectly in the hand for tremor-free linework. Left raw and unlacquered, the surface reacts naturally with your hands and the air over time, developing a rich, darkened, completely personalized patina that uniquely documents your creative journey. Equipped with two internal capillary ink reservoirs, the Lumos Pro Duo delivers double the utility, functioning as an indispensable "loyal everyday companion" for modern creators.
✨ Signature Features: Dual-Ended Innovation & Sustainable Mastery
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Double-Ended Duo Configuration: Maximizes your creative flow by holding two different tips and two independent ink reservoirs at the exact same time.
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Raw Brass Construction: A beautiful, heavyweight metallic exterior engineered to age gracefully, forming a custom, antique patina unique to your skin chemistry and grip.
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Zero-Waste Capillary System: Features two reusable internal wick reservoirs that absorb fountain pen ink directly from the bottle, eliminating single-use plastic waste.
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11-Piece Full Creative Tip Set: Shipped with a comprehensive matrix of 9 professional artist tips and 2 writing tips that you can swap at will:
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Fineliner Tips: 0.1, 0.2, 0.3, 0.5, 0.8, and 1.0.
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Felt-Tips: Chisel, bullet, and a flexible artist's brush tip.
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Daily Writing Tips: Hard-point 0.3 and 0.5 options.
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The Ultimate Studio Unboxing: Arrives beautifully packaged with the Brass Duo pen body, the full 11-tip creative matrix, 2 reusable internal ink reservoirs, and a 3ml starter sample of Deep Black ink.
🛠️ Technical Specifications
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Brand: Tom's Studio
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Series: Tom's Studio Lumos Pro
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Model/Color: Brass (Unlacquered)
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Product Type: Duo Tip (Double-Ended) Refillable Fineliner & Brush Pen
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Body Material: Premium Machined Brass
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Dimensions: 155mm Length Capped | 145mm Length Uncapped | 10mm Pen Barrel Diameter
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Ink Compatibility: Standard Dye-Based Fountain Pen Inks
Why Choose the Lumos Pro Duo Tip in Brass?
The Lumos Pro Duo is the ultimate instrument for the fast-paced artist, architect, or journaler who refuses to compromise between efficiency and eco-friendly design. By adapting one beautifully machined, brass barrel to carry two independent tips at once, it delivers a massive "stroke of brilliance." It successfully condenses an entire pencil case of disposable plastic liners into one indestructible, striking, double-sided creative workhorse.
"The raw Brass Duo is the absolute pinnacle of luxury and utility in the Tom's Studio lineup. The weight of the brass anchors your hand beautifully, requiring zero downward pressure to draw. Pro tip: Since the Duo contains two separate internal ink reservoirs, you can run two completely different colors side-by-side! To beautifully complement the gold tones of the brass barrel, try filling one end with a rich sepia ink for your fine 0.3mm outlines, and fill the opposite end with a dark forest green or deep navy to block in shading with the flexible brush tip!"
| Brand | Tom's Studio |
| Can Engrave | No |
| Cap Mechanism | Insert |
| Cap Can Post | No |
| Colors | Brass |
| Complimentary | Packaged in a box which contains the Lumos Pro pen, the Full Creative Tip set, one ink reservoir, and a 3ml sample of Deep Black ink |
| Dimension | 5.7" L x 0.4" D |
| Filling Mechanism | Refill |
| Grip Material | Aluminium |
| Has Clip | No |
| Length Capped | 6.1" L |
| Length Posted | No |
| Material | Aluminium |
| Refills & Inks | Tom's Studio Ink Bottle |
| Retractable | No |
| Series | Tom's Studio Lumos Pro |
| Type | Fineliner |
| Warranty | Lifetime Technical Support |







