Specification:
The clamp ring inner diameter: 27mm
Material: ABS

Features:
- Design that inserts into the top of your bottle to create an instant airtight seal.
-It\'s better than ordinary EZ cap， Steel ring install on bottle， More stable.
- Matching pad and nuts included， Easy for use.
- For inner diameter 17mm bottle.

Package Included:
1x Beer Bottles Replacement