Making a homemade bong for a fun need help with something

[IamTheCook]

I have a ash catcher http://www.ebay.com/itm/141167699345 <--- that one to be exact and i need a down stem he sells ones that are 14mm/14mm/2 inches long but if the atch catcher male end is 14mm will that fit or what downstem should i use it need to be between 2-4 inches long max and NEEDS to fit that ash catcher any help will be great

 

[lookyboop]

The post is gone but I can assume that it will fit. 14 mm is one of the standard frosted glass sizes, its also one if the smallest. If its a drop stem then you should also be pretty set since most drop stems and slides are interchangeable.

Btw, not sure if your blowing glass, but if your using a material other than glass and the ash catcher is frosted glass, I would suggest you to use a rubber stopper to get a proper seal.