Features: Universal size:They fit perfectly in all glass . Easy & clean to use: Just fill the water into the mold.Come with the cover which is clean. Can be easily removed from the tray when the ice is done. Melt slower: Bigger than regular ice cubs and melt slower. Made of good quality material free of any harmful toxic material. Widely use:For whiskey, cocktails, and non-alcoholic beverages. Specification: Material:Silicone Shape:Round Size:6*5cm/2.36”*1.97” Ice Ball Diameter: 1.97inch Color:clear Package Included: 4x Ice Cube Makers