萨克斯 (sàkèsī) is a phonetic transliteration of 'sax' (after Belgian inventor Adolphe Sax, 1814–1894), and 管 (guǎn, 'pipe/tube') marks it as a wind instrument. In casual speech, people often shorten it to just 萨克斯 (sàkèsī).
culture
The instrument was invented around 1840 by Adolphe Sax — Chinese keeps his name (萨克斯) and adds 管 to classify it as a tube-shaped wind instrument, the same way 长笛 'flute' uses 笛 (flute).