While you are dabbing, this carp cap of our own brand 'OIL Black Leaf' prevents the precious smoke from evaporating too fast. The carb cap can be held above the opening of the banger/oil nail to reduce air flow which leads to more smoke development. 

Further benefit: The sharp end of the carp cap is a perfect dabber for placing sticky precious substances at the hot oil pan. Made of heat-resistant borosilicate glass.