Blue is the default for a reason. It reads clean on whiteboards-adjacent surfaces, pops against metal and stone, and doesn't look like an error when someone's marking up a sample board. These Staedtler dry marking pencils do that job properly. Round barrel, comfortable grip, ink that holds on glass, metal, wood, leather, stone, plastic, and paper. Light fast. Waterproof. Twelve in the box so the whole team's covered. Add to cart and stop reaching for a pen that was never meant for the surface you're writing on