This essential technical drawing set from rOtring contains everything you need to make precise, detailed drawings. The package includes 3 high-precision ‘Isograph’ technical pens in nib widths of 0.25mm, 0.35mm and 0.5mm, giving you plenty of range, as well as a lightweight 0.5mm ‘Tikky’ mechanical pencil and 12 high-polymer lead refills. In addition to this, the box also includes a very effective anti-smear Rotring eraser, a compass attachment and a bottle of ink for the pens. This ink is very highly pigmented, for exceptional opacity and making it very lightfast too. - Ink transparency: Opaque - Brand: Rotring - Volume: (ink bottle) 23ml - Number of pieces: 3 pens 1 pencil, 12 leads, 1 eraser, 1 compass attachment, 1 bottle of ink