iSi 1790 01 Nitro Whip Cold Brew Dispenser makes nitro coffee, nitro teas and nitro cocktails with pure nitrogen gas. Up the flavor with rich brews that have a lot of flavor with creamy textures and velvety foam. Only suitable for cold application up to 86 F. The bottle and head is stainless steel. The head does have non-slip silicone grip and is used with a silicone gasket. Includes a 2-year warranty. Check out <a href="https://www.isi.com/en/culinary/recipes/detail/nitro-f ruit-tea-smoothie/" target="blank">Nitro Fruit Tea Smoothie recipe</a> from iSi. Use iSi 0705 Nitro Charger N2 (sold separately). - Stainless Steel - NSF - Capacity 1 qt - Sold per each