This mini glass blunt features a glass bubbler attachment for a little percolation on the go. A helical titanium-coated centre in the glass blunt feeds the herb by turning the screw. The smoke travels through the bubbler's mini ufo percolator before exiting a narrow tube to the mouthpiece. Use the blunt sans bubbler and just screw on the glass mouthpiece. It comes with a cleaning brush and a poker for the small airflow holes.