PenTools by Pentel N50 Permanent Marker Heavy Duty Bullet Tip (3.0mm Line) for Marking Pack of 4 Assorted Colours

Amazon

For permanent markings, quality control, parts testing With durable, robust round tip, permanently dimensionally stable, ideal for harsh environments In paper blister, made from FSC-certified paper One blister card contains: 4 permanent markers (2 x black, 1 x red, 1 x blue) Target gender: unisex

Euroffice

Durable permanent marker. Writes on almost any surface rough or smooth. Heavy duty with tough aluminium barrel. Bullet tip for a 3.0mm line width. Barrel colour matches ink colour. Ink colour: Assorted x2 Black x1 blue and x1 red.