The new Arcline series for Grav represents a leap forward in terms of design and function. Inspired by the columns that were prevalent in Ancient Italian architecture this 8 inch beaker bong is a work of art that is made with thick, high quality borosilciate glass, which provides an unparalleled level of structural integrity. The luxury of this pieces comes from the thickness of the glass and the clean, scientific design and it features a superior handfeel along with flame-polished GRAV emblem. The fission downstem diffuses the smoke, leaving a cool, smooth hit. And it’s best used with 1.5 inches of water.