A Cocktail Kingdom Original! 30ml (1 ounce) on one side and 60ml (2 ounce) on the other. Also has a .5 oz, .75 and 1.5 oz etching on the inside. Great for getting precise measurements. 18/8 stainless steel with Gold plating, a nice solid weight and finish. As with all of our plated items, this is NOT DISHWASHER SAFE.