Specification: How To Use? - Please wash with clean water before use. - Place Keep the stainless steel ice cubes in the refrigerator for 4 hours or more. - When ready, use the professional clamps(Package come with) to put the ice cubes in the cup. - Add 3-4 frozen cubes per drink. What Will You Get? - 8PCS little metal ice cubes. - A plastic container, to help you Storage the cubes in freezer. - A Professional clamps with anti-slip rubber cover, can put the cube into the glass, more stable and convenient. Use them in everything from plain water to diet coke to white wine, they successfully chill the drink without affecting the flavor! no watered-down drinks! Other than that, they cubes are very handy. Rather than worry about filling ice trays or using stale ice from a bin, you can have reusable cubes at your disposal whenever you need them! This is a product you have needed all of your life. If you very hate melting ice cubes. Now! These stainless steel reusable ice cubes are amazing for keeping your drinks cold, while maintaining all of the flavor! ENJOY!