uni ball ZENTO Signature model • Model: uni ZENTO Signature model • Ball diameter: 0.5mm • Country of manufacture: Made in Japan This is the signature model from the ZENTO series, known for its simple design and smooth writing feel. This is a brand new, unopened set of 6 pens. Thank you. For international customers: uni-ball ZENTO Signature Model • Model: uni ZENTO Signature Model • Ball diameter: 0.5mm • Country of manufacture: Made in Japan This is the signature model from the ZENTO series, known for its simple design and smooth writing feel. Brand new and unopened set of 6 pens. Thank you for your consideration.