Would not recommend this pencil, order the 800 instead. The tip of this one is fairly easy to break. Mine broke in my bag and I can't use the pencil anymore. Impossible to get it repaired.
hugros00730There's replacement tips for $12: http://www.jetpens.com/Rotring-600-Drafting-Pencils/ct/1109
But yeah that's only half the cost of a new pencil on this drop, or a third the cost of a new pencil from JetPens, so not really cost effective if you break the tip a lot. I guess the 600 is meant for storage in protective cases.