This clean mini beaker is blown in Southern California by Wil Glass. It features a sleek bent neck, a yellow and blue signed signature, and a heavy duty 18mm joint. It is made from 38x4mm tubing and it measures 9.75" tall with a 3.75" diameter base and a 4.75" slit cut diffuser (measured from the top of the male ground joint). The tube comes with a bushing 18-14mm diffuser and a 14mm slide. This piece is very solid and well constructed.