คุณลักษณะ

• The upper part is a female-shaped connection part of the common grinding standard, and the lower part is a glass-made connection tube with a common grinding male-shaped connection part that enables exhaust from the nozzle port.
• Since there is a length of glass tube from the nozzle part to the lower part of the male connection part, it is possible to exhaust from the lower part of the connected container.