Usado para ajuste fino do volume de gás do aerador, o comprimento total é de cerca de 4,5 cm, adequado para mangueiras com diâmetro interno de 4 mm e diâmetro externo de 6 mm.
As cores são azul, verde, amarelo, branco leitoso e cinza prateado. As cores são enviadas aleatoriamente e as observações são inválidas!
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