These writing devices mix the comfort of mechanical pencils with the flexibility of coloured leads. Relatively than conventional graphite, they make the most of skinny, pigmented refills, usually out there in a big selection of hues. A typical instance includes a refillable physique, a mechanism for advancing the lead, and an eraser. The coloured refills are typically interchangeable, permitting for fast shifts between colours.
The flexibility to change between colours while not having to sharpen pencils makes these instruments significantly worthwhile for artists, designers, and anybody working with visible media. They provide precision and management, important for detailed drawings, sketches, and illustrations. Traditionally, coloured leads have existed for hundreds of years, however the introduction of the mechanical format streamlined their use and improved portability. This mix permits for larger effectivity and reduces the mess related to conventional coloured pencils.