Features:
- Silicon?e material, stable chemical property, environmental protection, non-toxic
- Best used for Airlock ,Valve, the pulg for Brew Wine

Specification:

Material: Silicone

Hole diameter: 8mm

Please check the flowing item size detail:

Model	Diameter（upper）	Diameter（bottom）	Height
Size 1	22.5mm	17mm	25.5mm
Size 2	25.5mm	20mm	27mm
Size 3	28mm	23.5mm	23mm
Size 4	32mm	26mm	26mm
Size 5	36.5mm	30mm	30mm
Size 6	42mm	32mm	30mm
Size 7	46mm	37.5mm	37.7mm
Size 8	50mm	40mm	37mm
Size 9	54mm	45mm	37mm