Disposable liquid ink roller U3
Liquid ink roller, liquid ink conforms to ASTM D-4236
Tip: Stainless steel needle tip and conic tip
Ball: 0.5mm/0.7mm
material: plastic
Ink color : Blue, black, red, green,
Proposed packing: 12pcs/dozen box, 864pcs/carton
Advantage:  Slim barrel , Precise writing smooth to the last drop of ink at any angle, ideal for both office and students writing and drawing.