Like a conventional bowl, this oil bowl is put on the bong by means of a joint system. So you can easily vaporize oil and other essences with every bong. A conventional lighter is sufficient for the heating, but better would be a jet-burner, because it has a powerful blue flame and even after a long usage it stays quite.
Cross section: 18/8
Total height: ca. 6,5cm
Height from the cross section's upper edge: ca. 4cm