The MADIC 6 is a reserve tank designed to store and dispense up to 6 shots of your favourite liquor. Made to take the place of your tumbler's lid, it securely fits nearly all 591ml stainless steel tumblers on the market. Untwist the button to fill the reservoir. When you're ready for a drink, the fun button, and the MADIC 6 will dispense ½ shot at a time down into your tumbler. Engage the Shot-Lock Switch to create a leakproof seal between your stored liquor and the tumbler until you're ready to mix your next drink. For the best performance, pair the MADIC 6 with our VOLST 22 tumbler. We designed the MADIC to thread onto our VOLST, creating the most advanced cocktail drinking system on the market. Now you can drink what you want, when you want, where you want, all at the press of a button. *Need a larger size. Cheque out our MADIC 9, which holds 9 shots and fits 887ml tumblers.