The Heckel clarina is made entirely from metal and is very similar to the soprano saxophone due to the conical shape of its joint. The grip system of the Heckel clarina is identical to that of the oboe and the mouthpiece is similar to that of the saxophone.
A unique feature of the Heckel clarina is the triple sound. In the lower position it resembles the English horn, in the middle position the saxophone, and in the high position it resembles the clarinet.
The Heckel clarina did not prevail in music. In total, only 130 to 150 were sold until 1904.