These are the finest of quality. I have been in the surveying profession since 1977 and the pencil is a major tool of my trade.
Without a doubt, these pencils are the best field and office drawing partners I have ever owned. I bought my first set in the late 1990's when Koh-I-Noor Technical pencils I was using for drafting were no longer available. I rank these above the Koh-I-Noor because of the non-slip body of the unit.
The DRAFT?MATIC has a good weight in the hand, is smooth in operation and can be used in a "LEROY" lettering machine or drafting.
I use the .03mm, .05mm, .07mm & .09mm in drafting and field note preparation as well as an additional .07mm with blue lead & .09mm with red lead. Colored leads are softer than the typical "H" leads I use.