A general purpose item, suits fitting to a pipe or hose with a 12mm internal diameter.
Internal diameter means fits the measurement of the opening across your tube or hose.
You may need to place the end of your tubing in hot water so it expands before pushing on to this filter.
The topics mentioned are suggestions only, please make sure as to suitability yourself for any given application.
Item sent promptly from here in the UK, with the service you've come to expect from us.