The extra-fine version of the Sakura Solid Marker: the Solid Extra Slim with a line width is approx. 5mm.
The oil-based pigment paint shows up well on dark surfaces and is permanent and waterproof once dry.
It can be used on a wide range of materials including metal, wood, glass, rubber, plastic, leather, canvas, and paper.
It works well on both smooth and rough surfaces, making it great for outdoor projects, home improvement, and industrial use - it can even be used to write on wet surfaces.
When the tip gets short, expose more of the marker stick using the following steps: Unravel one strip of the micro-perforated plastic sleeve next to the tip, and carefully pull off the white plastic tip holder. To maintain the marker's body length, you can install the removed plastic piece onto the other end of the marker.