Balls of Steel, from by Original BOS are premium drink coolers for whiskey, wine or spirits. Balls of Steel - are forged from the highest quality stainless steel (316 medical grade) and act as a temperature conduit in replacement for ice in small volume beverages. Balls of Steel work more efficiently and faster than ice while preserving the low notes any whiskey veteran strives to uphold and protect. While cooling your whiskey, wine or spirits Ball of Steel serve a bigger purpose. From each unit sold, the company selling Balls of Steel, Original BOS (https:// www.OriginalBOS.com), donates a high percentage of profits to MD Anderson Cancer Center thus dubbing Balls of Steel as Drink Coolers With a Cause. Use the highest grade of stainless steel, Balls of Steel so that you do not affect the taste or flavor of the drinks during cooling.