Pilot G-Tec C25 is the thinner version of the C-Tec C4. It produces an extremely fine and dry line which resembles the old-school Rotring 0.13 mm technical ink pen. With the G-Tec C25, there is no fear of blockages or drying up. This is a smart, technical gel rollerball that is highly recommended for technical writing and very detailed drawing, or anything that requires a high-precision control of the line.
According to Pilot, The G-TEC C series combines two revolutionary technologies: the superfine Hi-tecpoint and biopolymer gel ink. With a highly resistant tungsten carbide ball which retains its shape and is extremely hardwearing.