Vessel Cone Pipe with Double Helix Design and Ergonomically Designed Conical ShapeIntroducing Cone. An exciting addition to the Helix collection. The Cone is made with the same patent pending, double helix design for filtering and cooling. The ergonomically designed conical shape provides a more lightweight feel and hold, while creating more resistance and tighter pull. The Cone pays homage to the classic joint and is made to enhance your dry herb experience. Precision crafted in pure, non toxic brass The more Cone is used, residue