The Mill bong is a straight tube glass water pipe from Grace Glass that features high quality construction, borosilicate glass and a sleek design. Functionality is highlighted by the bong's windmill percolator. This is an awesome percolator which is typical in the European market, but rarely seen in America. Take advantage of this opportunity and be your only friend with the windmill perc. Smoke is filtered through this percolator the same way that water is churned through a typical windmill. 

Additional functionality is added via the splash guard and the 3 piece ice pinch. Grace Glass manufacturers all of their bongs on site at their Amsterdam manufacturing and distribution facility with extreme attention to detail.