4 PCS Wing Sung 3008 Piston Fountain Pen Transparent Set?Upgraded?Golden Iridium Fine Nib 0.5mm & Trim, Large Capacity Calligraphy Pen for Writing/Office/School/Signature/Gift

?Detail:? Brand: Wing Sung Length: 142cm?Weight: 22g?Diameter: 15cm Cap: Screw type Nib: Fine Nib (About 0.5mm) Ink Adding Method: Rotational movement of the piston (Can not use converter) Application Scene: Everyday Life/Business/Writing/Office/Calligraphy/Gift Package Included: 4x Transparent Fountain Pens(Do not contain ink) ?Wing Sung 3008 Piston Transparent Fountain Pen Set 2018 New Upgraded? ?Humane way to add ink : Rotational movement of the piston, easy to clean. Internal sealing device, ink will not spill, safe and sanitary. ?Fully transparent penholder: Using different colorful inks to get different beautiful scenery and enjoy the visual feast. ?4 colors set for everyday life: Record your thoughts or feelings on paper. ?Friendly notice:? 1--When the piston is rotated and you hear a sound, continue to rotate, the piston will move down to the bottom. Then start to absorb ink, slowly rotate in the opposite direction until the sound is heard again, which means that the ink finishes to add. 2--The pen only fits bottled ink, can't use the ink cartridges ; 3--Package included 4 pens, it does not contain ink.