Pilot roller pen needle tip v5 set 6 colors pilot v5 needle pen discover the needle tip legend! bright and vibrant colors that do not fade with liquid ink. pilot patented att cap system that balances the air pressure inside the cap, prevents ink from leaking when the cap is closed, and prevents excessive flow when opened. .longer life than other roller pens with its ink regulator that ensures uninterrupted and regular flow of ink until the last drop. the most suitable tip structure for rulers and stencil drawings. with a tungsten carbide ball placed in a stainless steel needle tip, it is extra resistant to impact, abrasion, bending, and uninterrupted. printing.window showing the amount of ink on the body.0.5/ 0.7 mm. nib thickness optionsnote 6 pens will be sent. maximum 20 pieces of this product can be ordered. swordslife reserves the right to cancel orders over 20 pieces. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.