which makes it reliable indoors and outdoors

Each pen has a nylon brush tip that holds a fine point under light pressure and spreads to a broader stroke under more

Suitable for both indoor and outdoor use

and it's built to take a beating outdoors — it holds up against rain

Grog Aqua Pro Paint works on most surfaces and can also be used with brush or airbrush

krink k 51 permanent ink marker DEFS which makes it reliable indoorsClassic flowpen from KRINK filled with black alcohol based ink and a 15 mm fibre tip. The industrial ink can be used on everything from paper and cardboard to plastic and metal. It is the perfect pen for tagging, lettering, calligraphy or signs. Line width: about 15 mm.