10.25 oz. Riedel Single Rocks Glass. Stylish and versatile, the Manhattan family of tumbler glasses from Riedel are designed to be eye-catching, yet stand up to demanding use. At 10.25 ounces, the Single Old Fashioned is perfectly sized for serving spirits, juice and water. Made from quality European crystal, this sophisticated vessel is the glass of choice for fine restaurants, bars and more. And with a large print area, your brand will be easily seen and associated with the quality and style that this glass exudes.