Turn any sized regular mouth (2 3/8″ internal diameter) Mason jar into a cocktail shaker! Buy extras for your friends, because they are going to be jealous when you screw this awesome lid onto your Mason jar and whip up a batch of delicious martinis, margaritas, or your house cocktail of the moment! This version does not have a silicone seal so the two metal pieces are precisely engineered to fit tightly. 

Includes one filtering lid insert with small metal cap and one rust proof band / ring. Jars are included.