Piston Fountain Pen Wing Sung 3008A Gold Plated Fine Nib Transparent Gold Trim 4 Colors Set

SPECIFICATIONS: Model : Wingsung 3008A Nib: Stainless steel with gold plated ; Cap : Screw Type Length: 138mm; Diameter: 14mm; Weight: 25g Package Include: 4 X fountain pens , ink not included The piston filling mechanism is easily operated by twisting the knob at the end of the barrel counter-clockwise to extend the piston, submerging the nib in ink, then screwing the knob tight to retract the piston, drawing ink into the pen straight from the bottle—no need for cartridges or a converter! Precision Anti-leaking Rotation Design : operating the piston while ink is in the pen will cause ink to leak out of the pen. You can twist the knob end of the barrel in clockwise to lock it until you hear a "click"