For Tobacco Use Only. A water pipe is a pipe designed to remove the impurities from tobacco smoke by filtering the smoke through water. Highest Quality Glass Made on American Soil. Twin Turbine Percolators. AirCraft Grade Aluminum Base. Custom Carrying Case. 7mm Thick Glass. Caliber Quality Glass & Welds. Introducing the 16 Tomahawk from US Caliber Designs, A USA Glass company. This American Pipe is the highest quality 7mm-thick borosilicate glass featuring. Twin Turbine Percolators, Splash Guard, and a Air-Craft Aluminum Base. The Tomahawk includes a hard shell carrying case and a 18mm bowl. Experience the enjoyment of an American Made glass pipe from US Caliber Designs.