Black Leaf Mini Oil Bong blue/multi-colouredCute small oil bong from Black Leaf with decorative patterns of coloured glass. The oil rig is equipped with an oil nail and a protective chimney dome. The dome can also be easily covered with a finger in order to achieve a stronger smoke development by minimizing the air supply. The chillum has diffusor holes so that it bubbles nicely and the smoke cools down a little bit. Application: First (only!) heat the nail pan with a jet burner until it glows.