Our Standard Hose Set has an all glass mouthpiece with a scientific ground joint glass insert, which connects the hosing set to the hookah. We use borosilicate laboratory grade glass to construct the mouthpiece and insert. Each hose is manufactured from specially formulated taste free hosing, certified to the highest food and pharmaceutical grade hosing standards and is designed to have maximum flexibility without kinking. Our goal with this material combination was to create a hose that was hygienic, materially safe and would not impart any material taste into the smoking experience. All materials are extremely durable and will not degrade even after many years of heavy use. To clean after use, just use hot soapy water. After a through cleaning and rise just hang up to drip-dry for subsequent sessions.