Our 3-Tier Salt Rimmers are able to accommodate a glass of up to 5" in diameter. * The top tier comes with a sponge which is commonly soaked with lime juice when in use. * The two other tiers can be filled with salts and sugars of your preference. * It"s now common for bars specializing in martinis and margaritas to have several rimmers to hold the many colors and flavors of salts and sugars now on the market. * Hint: For a super rim of salt or sugar (even on plastic drinkware), remove the sponge and use honey. Works great for colored salts and sugars that might otherwise be messy.