Twinmarker Sketcher Main Kit 1 features a plastic shaft in black. It includes a wedge, brush, and round tip design. The writing fluid is a color-intensive, water-based AquaPro ink, and the Sketcher cartridge is replaceable. This kit is particularly sustainable as individual colors can be reordered as separate cartridges, offering well over 60,000 possible combinations. The line width ranges from 2 to 5 mm, and the writing colors of the instruments are assorted. The pack contains 12 Sketcher twin markers, with one each of yellow, orange, deep red, shock pink, lavender, violet, crystal blue, ultramarine blue, emerald, lime juice, burnt sienna, and black.