Libbey Glass Inverness Rocks 9 oz cs 3 dz 34.2lbs Inverness Rocks 9 oz cs 3 dz - Savor your spirits on the rocks in the timeless Inverness Rocks glass. This case contains three dozen 9 oz glasses, featuring a classic and versatile design that is perfect for serving cocktails or straight drinks. Whether it's whiskey, bourbon, or a refreshing mixed drink, the Inverness Rocks glass is a must-have for any bar or restaurant.