The Jumbo Duo set from Erich Krause is 2 two-color thick pencils. Each pencil combines blue and red colors, making it possible to edit texts, make notes, and highlight important fragments. The special triangular shape provides comfort while working with the... pencils, and the thick lead significantly extends their lifespan. Pencils can be sharpened using the sharpener, which is also included in the set, and they do not crack when dropped.