The Opus 88 Flow fountain pen is a large eyedropper-filled pen with a piston operated shut-off valve. The barrel is made of transparent acrylic with playful colored swirls and a...

The Opus 88 Flow fountain pen is a large eyedropper-filled pen with a piston operated shut-off valve. The barrel is made of transparent acrylic with playful colored swirls and a...

The Opus 88 Flow fountain pen is a large eyedropper-filled pen with a piston operated shut-off valve. The barrel is made of transparent acrylic with playful colored swirls and a...

The Opus 88 Flow fountain pen is a large eyedropper-filled pen with a piston operated shut-off valve. The barrel is made of transparent acrylic with playful colored swirls and a...