The Koh-I-Noor Optional Drawing Head for Koh-I-Noor Drawing Board #25434 (sold separately), turns the drawing board into a portable drafting machine. It locks at all angles onto the board and features pre-set angles at 15 degree increments. This drawing head offers versatile drafting on-the-go. Made in Germany. Koh-I-Noor - Bringing you the best in professional grade drawing and design.