Intoxicologist Shaker Neon Green Tired of customers braggin' about their "degrees"? Show them your specialty with this "Intoxicologist" 28oz Powder Coated shaker. The 28oz Shaker, also known as a Tin, Boston, or Cocktail shaker, is traditionally used to cap a mixing or beverage glass. The 28oz shaker can also be used in conjunction with a 16oz shaker or Mako shaker to mix cocktails. This version of our 28oz weighted shaker features a durable (bake on) powder coat finish. Available in various, vibrant colors.