professional or home use [SEP] this is a wonderful set of combs it does not state it on the package but they seem to be the unbreakable type of combs which is fantastic for professional hair stylist i believe that this set will work for a stylist that has to work with various hair types because of the different combs that are included in the set there are rat tail one with a metal tip combs as well as a couple of pick type combs some have dual ends for different purposes for typical home use these should last virtually a lifetime because of how they are constructed for salon use they should last a very long time and is well worth the money just a note some of the combs had a grease like substance on them which i assume was part of the manufacturing of them i know oil is used in the production of plastic and some was likely just missed during the cleaning process or they left some on there for a reason not sure but it easily wipes off nonetheless this is a very nice set of combs for home travel or salon use