Choroi claves are made of European Robinia wood. They are particularly suited for elementary music making and rhythmic exercises with children and adults. The asymmetrical form and smooth surface of the produces a clear, bell-like sound, and it is possible to play two tones with each clave. The surfaces are treated with linseed oil, it is recommended to have an occasional refresher. e.g. with teak oil, furniture liquid wax or furniture polish.