EASY TO USE - Each pen comes with a coded cap and pocket clip cap, light weight, easy to hold, and incredibly durable. Excellent for taking beautiful notes, journals, technical drawing, and much more. Experience smooth, - writing and crisp ink colors that leave consistent lettering and lines every time. Pigment Ink: , non-refillable, odorless, archival quality, , and won't stain, fade, or chip. Our art pens conform to ASTM D4236. Works well with markers and ink. Photocopy , does not dissolve toner. 9xSketch pen(Include 9 sizes, 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.8mm, Brush.) Various Tip Sizes - Multiple drawing pens, 9 unique sizes to choose from. Includes 8 micro tip sizes: 0.008 in (005), 0.010 in (01), 0.012 in (02), 0.014 in (03), 0.016 in (04), 0.018 in (05), 0.020 in (06), 0.024 in (08). 1 soft brush tip. Offering a variety of sizes for your needs, these black fine tip markers are ideal for drawing and writing. Product Description： Contains: 9 sizes, 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.8mm, Brush. Black Drawing Pens - Use them on strokes, vellum, and a wide range of papers. Artists can expect to be satisfied with line quality, pen build quality, and ink solubility. The ink flows freely, with a smooth glide allowing you freedom of expression, clean contours, detailed line drawing, as well as other drawing techniques. Architects, designers, illustrators, and sketch artists love these high-quality multiliner pens, because they meet all the demands of their ink work. color: gray Single pen size: 14x1cm Black Drawing Pens - Use Them On Strokes, Vellum, And A Wide Range Of Papers. Artists Can Expect To Be Satisfied With Line Quality, Pen Build Quality, And Ink Solubility. The Ink Flows Freely, With A Smooth Glide Allowing You Freedom Of Expression, Clean Contours, Detailed Line Drawing, As Well As Other Drawing Techniques. Architects, Designers, Illustrators, And Sketch Artists Love These High-quality Multiliner Pens, Because They Meet All The Demands Of Their Ink Work. Contains: 9 Sizes, 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.8mm, Brush. 9xSketch Pen(Include 9 Sizes, 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.8mm, Brush.) Color: Gray Pigment Ink: , Non-refillable, Odorless, Archival Quality, , And Won't Stain, Fade, Or Chip. Our Art Pens Conform To ASTM D4236. Works Well With Markers And Ink. Photocopy , Does Not Dissolve Toner. Color Gel Pens Set