TWSBI ツイスビー 万年筆 プレシジョン Precision ガンメタル ジェミニ。TWSBI PRECISION ボールペン1.0mm - 神戸派商店。TWSBI/ツイスビー】PRECISION ボールペン (ブラック) | 590&Co.。 プラチナ万年筆 出雲 漆溜塗 中字 珍品です。【早い者勝ち】ペリカン スーベレーン M320 ルビーレッド F 限定品。The TWSBI Ball is an elegant, ball-shaped ink bottle made of polished glass. Its main function, beyond its undeniable aesthetic appeal, is to hold 70ml TWSBI ink bottles inside its central opening. This allows you to use every last drop of ink thanks to the cuts in its base, which tilt the bottle at angles of 45, 34, 22.5, and 11 degrees. This way, when filling your fountain pens, you can use every last drop of ink, even when the ink level is low.