Visconti Fountain Pens. Eco-Logic series. SKU: KP10-10-03-FPF. Color: Red. Nib Size: F. Visconti KP10-10-03-FPF Rembrandt fountain pen made of bio-plastic in red color obtained from hemp plants. Visconti KP10-10-03-FPF features silver tone pocket clip engraved with brand name. Material: Bioplastic.