Cheech Glass and Gangster Glass Multi-Piece Bong Bases and Middles come with one Keck-Clip (White Plastic 45mm K-Clip) so that they can be locked onto the next piece you put above them. (HOSS Glass Build-A-Bong™ and Preemo Glass Multi-Piece Bong Bases also come with a K-Clip while HOSS Glass Build-A-Bong™ and Preemo Glass Multi-Piece Bong Middles do not). More K-Clips (including different colors) are available separately, if you want them!
Our Multi-Piece Bong Bases, Tops and Middles from Preemo Glass, HOSS Glass Build-A-Bong™, Cheech Glass and Gangster Glass all have standard (45mm) Multi-Piece Bong joints and therefore are very compatible and can be mixed-and-matched with one another. Therefore you can choose, for example, to purchase and construct a Multi-Piece Bong set consisting of a Gangster Glass Multi-Piece Bong Base, Cheech Glass and Preemo Glass Multi-Piece Bong Middles, and a HOSS Glass Build-A-Bong™ Multi-Piece Bong Top (or any variation on that theme) if you so desire.