The key to serving a perfect cocktail on the rocks is to chill the spirits without diluting their distinctive flavors and aromas. This kit makes it simple to form a uniform sphere of ice that melts slowly and evenly - and creates an impressive display. Professional bartenders recommend spherical ice cubes for chilling everything from premium whiskey to mixed drinks. Press produces one perfectly formed ice sphere at a time. First, fill the included cups with water and place it in the freezer to form an ice block. Then place the frozen block into the press to transform it into a sphere in about a minute. Easy-to-use press requires no physical effort on your part. Small press makes 2" diameter ice sphere; large press makes 2 3/4" diameter ice sphere. Stainless-steel tongs allow you to neatly and easily remove the ice sphere to place it in a glass. Made in the USA.