Features: Fountain Pen Washer Dropper ensures easily and cleanly washing inks residues left in fountain pen. Suit for various fountain pen, such as retractable inks pen, press fountain pen. Features silicone sealed leakproof construction and ergonomic single hand operat, combining ABS body with high cleaning efficiency for fountain pen nibs, inks cartridges, dip pen tip and inks absorbers. Essential for fountain pen collectors, calligraphy artists, teacher, student, office workers, and technicians requiring regular maintenance of professional fountain pen, dip inks pen, calligraphy fountain pen and other writing instruments. Widely used for inks converter replacement, outdoor sketching, calligraphy practice, and pen exhibition maintenance. Revolutionizes fountain pen care with highly cleaning efficiency, solving compatibility headaches of traditional washers. Specifications: Color: Clear Component: PP Bore Diameter Type: 2.3MM, 2.6MM, 3.2MM, 3.4MM, 3.8MM, 4.9MM, 5.6MM Size: As Picture Shown Weight: Approx. 10g Package Includes: 1Piece Fountain Pen Washer Dropper note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color