This green Duck Grace Glass Bubbler is a fascinating piece of glass art that will offer you an extraordinary hit! It is made of a high quality heat proof borosilicate glass, formed in the shape of a hollow base tube. It is intended for both oil and herb lovers! The tube ends up in a curving neck with a circular color reversals mouthpiece ring giving you lots of fun while smoking! It comes with a green 6Arm percolator that bubbles up your smoke, producing extra smoke diffusion. It includes also a built-in male sure ground of 18.8mm diameter, accompanied by a 3 point slide bowl, for placing your herb or tobacco. The sure ground adapts also to a vapor dome and a green nail for oil use. The black Grace Glass logo features at the front of the main chamber of your bubbler!