The image displays a set of engineering and professional technical pens from the German brand Rotring (specifically the Rotring Isograph set or the College Set). Contents of the set shown: • Isograph Technical Pens: Technical pens with a fine, metallic nib designed for technical drawing and design, available in different size grades distinguished by colors (e.g., 0.20 mm, 0.30 mm, 0.50 mm). • Mechanical Pencil: A Rotring mechanical pencil with a 0.5 mm lead size and a box of extra leads. • Additional Accessories: Lead refill case