Work knives with a ring at the end of the handle have been used in Southeast Asia since the 11th century.The ring allows hands-free work with the knife without having to put it down and reduces the risk of loss.The blade of the 599 XT is made ofN690and has a black coating.It is opened with a wave opener andlocked in placewith alinerlock.An additional lock also increases work safety.The handle shells are made of non-slip blackG10.With glass breaker and reversibleclip(tip-up / lr).