This ad features a 2 PIECE DEAL of two 14 mm ECONOMY GLASS SLIDE bowls for your water pipe with a hemispherical shaped bowl and a GREEN glass finish. Over-all this slide bowl is made from medium weight glass and is about 2 1/4" long (includes 1" long joint area), 1 1/2" outside diameter at the hemisphere's largest point and has a 14.4 mm male joint size. The actual tobacco bowl part of the slide is a deep cone shape that is about 1" inside diameter at the top surface and about 3/4" in depth with a single hole at the bottom. This item is an economy-grade glass item and as such will vary in exact size and features (but will always fit a 14.4 mm joint).