Pumps are known to fit the following liquor Bottles:
Crown Royal
Bacardi Rum
Jack Daniels
Grey Goose
Chambord
Jagermiester
Seagrams VO
Jim Beam and many others
The black plastic collars are included -if you want to glue the pumps to a bottle with out threads, such as a bear bottle, we made a short Youtube video so you can see how to do this. here it is: https://youtu.be/KkHRX56yUxM
They are known to fit the above bottles, but may NOT fit mini size versions of these bottles, such as airplane size or flask size versions, or super large size versions like gallon size etc we offer no absolute warranty that these pumps will work for your specific application, or your specific bottles size.... so measure for best results
Further this is considered a personal sanitary product, ie once used due to sanitary concerns cannot be returned for reuse