These pipes and accessories are designed for concentrate tobacco. Concentrated tobacco does not come in herbal form and cannot be smoked using a regular bong or hand pipe. The concentrated tobacco usually comes in the form of a thick oil, which can only be burned using special apparatuses and tools. We have full oil rigs for sale and we also sell special accessories, which can be used to make any bong into an oil rig. These accessories are known as Domes and nails, titanium nails and domeless nails.