All Kaywoodie pipes are made of aged imported Italian briar for cool smoking. Since the early 1930's Kaywoodie pipes have been made with the "drinkless screw-mounted attachment". The device traps tars and flakes in the shank and helps cool the smoke. Recently we added a new line that does not have the drinkless attachment. They are push bit pipes with either black rubber or fancy lucite mouthpieces.