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 wist the knob end of the barrel in clockwise to lock it until you hear a "click"
Specification
Brand: Wing Sung
Model: Wing Sung 3011 Fountain Pen
Pen Cap: Screw type
Material: Demonstrator clear plastic
Nib: Stainlesss steel fine nib with gold plated
Capped Pen length: 138 mm
Diameter:12 mm
Each Pen Weight: 18g
Package: 4 x fountain pen ( Ink Not Included for Safety )
