A well-crafted fountain pen at an irresistible price, featuring a built-in piston ink filling mechanism. TWSBI Eco SLATE BLUE ONYX Fountain Pen Modern industrial design meets traditional handwriting in the most ingenious way. Transparent body made of high-quality anti-fog material with chrome-plated trims. Transparent grip section, white cap, and white finial with the company’s red logo. Increased ink capacity for maximum writing autonomy. High-quality engraved stainless steel nib, available in writing widths: EF, F, M, B & 1.1. Screw-on cap with sealing o-rings and the distinctive TWSBI logo on the top. Sturdy chrome-plated clip and a well-designed central ring carefully engraved with the company logo. TWSBI includes in the package all necessary tools for complete disassembly and cleaning of the pen, offering the owner the special advantage of understanding how this unique writing instrument works. Pen length with cap posted: 16.6 cm. Closed length: 14 cm. Weight: 21 grams. Presented in a beautiful and secure gift box. The word TWSBI comes from the reversed initials of the phrase "San Wen Tong." In Chinese, it means "Hall of the Three Cultures." Emperor Qianlong built a monument to house the three great masterpieces of Chinese calligraphy. The word "BI" in China signifies the magic of writing instruments. This thoughtful symbolism gave rise to the name of these unique objects. Pronounced Twiz-bee!