Pipes made for smoking [[cannabis\\, sometimes called pieces or bowls, are made of a variety of materials, including blown glass, metal fittings, ceramic, Borosilicate glass, stone, wood, bamboo and other materials (preferably not aluminum). Subtypes include one hitter, bubbler, chillum, glass blunt, corn cob pipe, and standard hand pipe. Pipes vary greatly in shape and materials, and most are handmade. The common thread between them is having a narrow screened receptacle ("bowl", a "stem" (which may be a long flexible tube as on hookahs and vaporizers), and a "mouthpiece". The smoking material is placed in the receptacle and affected with a heat source while air is drawn through the bowl and stem to the user.
Blown-glass pipes and bongs are often intricately and colorfully designed. In India and Jamaica, the most commonly used pipe is the chillum.; in the UAE, midwakh; in Morocco, sebsi.