• Tumbler Adapter Compatible with Stanley and Cirkul Flavors Cartridges | Directly Install Tighten, Food-Grade Leak-Proof Silicone | Fits 40oz & 64oz Stanley Quencher H2.0 Tumblers (Black, 40 oz/ 64 oz) KWD 8.500
• Tumbler Adapter for Stanley to Cirkul, Compatible with Cirkul Flavors Cartridges, Fits Stanley Quencher 40 oz & 64oz Tumblers, Use Flavor Cartridges with Ease，Leak-Proof Design KWD 9.500
• Adapter for Connecting YETI Rambler Bottles to Cirkul Flavors Cartridges | Fits 12, 18, 26, 36, 46, 64 oz | Direct Insert, Leak-Proof Design | Food-Grade Plastic & Silicone KWD 8