I've been around 20 years and the draftsman Staedler brand was and still is one of the top brands for the "analogue" technical equipment of the profession and of the entire occupational field. Although today the CAD has the analog craft largely replaced, I have been working today to coloring and labeling exclusively with the Staedler crayons. And as I have made very good experiences with these pins in the profession get my five nieces when they come to visit, only this into their own hands. Whether the 12-year 4-year superior to that Staedler crayons are in my eyes the cheap offers from the supermarket in durability, color yield and especially the remarkable breaking strength far. Only the Pappverkaufsschachtel is not suitable for regular use, but an empty jam jar helps already progressed.