Cardinal International Arcoroc Excalibur Flute Glass, 5 3/4 Ounce -- 36 per case. 5-3/4 oz. Champagne Flute Glass. Excalibur glassware is the perennial favorite of foodservice professionals throughout the world. Fully Tempered for extra durability, it is 5 times stronger than regular annealed glassware, and is surprisingly easy on the budget too.Cardinal International