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