Thumba la spout limapangidwa ndi spout ndi thumba loyimilira. The spout akhoza kuonedwa ngati wamba botolo pakamwa ndi udzu. Zigawo ziwirizi zimagwirizanitsidwa kwambiri kuti apange cholembera chakumwa chomwe chimathandizira kuyamwa, ndipo chifukwa ndi cholembera chosinthika, palibe chovuta pakuyamwa, ndipo zomwe zili mkati mutatha kusindikiza sizili zophweka kugwedeza, zomwe ziri zabwino kwambiri zakumwa zatsopano zakumwa.
Ubwino waukulu wa chikwama cha spout poyerekeza ndi mawonekedwe wamba ndikunyamula. Thumba la spout likhoza kuikidwa mosavuta mu chikwama kapena ngakhale mthumba, ndilosavuta kunyamula.