The Opus 88 Demonstrator fountain pens continue to elevate the eyedropper tradition with fresh and unexpected color combinations. Precision-machined from solid bar stock resin, each pen features a reliable #6 stainless steel nib and a high-capacity ink chamber designed for serious writers and pen enthusiasts alike.
For 2025, Opus introduces the *Mocha Mousse* special edition—an elegant, dessert-inspired palette. Translucent warm beige resin is accented by a rich cocoa brown grip and blind cap, while the top finial is finished in a subtle almond hue. The clip and #6 stainless steel nib are treated with black PVD for a modern, cohesive aesthetic.
The eyedropper-filled barrel holds a generous 4ml of ink, regulated by a central shut-off valve system. This rod-and-valve mechanism ensures controlled ink flow and prevents leakage during travel or extended storage, making it a more secure and reliable alternative to traditional eyedropper pens.
The Opus 88 Demonstrator in Mocha Mousse is beautifully boxed and includes a glass eyedropper for easy filling.
Opus 88 Demonstrator Fountain Pen in Mocha Mousse 2025 Specifications
- Pen Material: Resin
- Nib: Stainless steel #6 nib; Black PVD finish
- Trim: Black PVD-plated trim
- Filling System: Eyedropper (includes glass eyedropper) with shut-off valve to prevent leakage
- Pen Length Closed: 5.8 in. / 147.3mm
- Pen Length Open (Cap Off): 5.44 in. / 138.2mm
- Pen Cap Length: 2.5 in. / 63.5mm
- Pen Body Max Diameter: 0.58 in. / 14.7mm
- Pen Grip Section Diameter: 0.48 in. / 12.2mm
- Pen Total Weight: 0.9 oz / 25.51g
- Ink Capacity: ~3.5ml – 4ml
- Gift boxed with instruction booklet
- Made in Taiwan