Large volume bubbler with Matrix percolator for open and cool rips!  Comes with 14mm Male Trumpet Cooling Mouthpiece as well as 14mm Whip-to-Glass Mouthpiece.  CELL3 Includes 10mm down stem for optional second input and it's 14mm on the CELL4.  Also include stoppers if you want to change it up.   14mm or 19mm Female Connection.  Medical Grade Silicone Tubing outer diameter is 11.0mm and inner diameter is 7.0mm.   Please note there may be small variations in the forming of glass.  Each piece is expected to function perfectly but there may be small variations in the glass from a visual standpoint.  Dimensions: 4.5in X 4.5in X 4.5in  Height at tip of mouthpiece: 10in *Cube Mega and Cube Mini picture for comparison purposes only.  You are only buying one item!