Inline Dome Perc Bong NautilusBlack Leaf Inline Dome Perc Bong Nautilus Introducing the Nautilus inline dome perc bong from the Black Leaf glass collection, this 44cm tall glass bong with a cool blue ocean vibe includes an inline dome percolator which results in purer and superior hits. With a strong borosilicate base and a female 18. 8mm joint size, this durable glass bong allows for a smooth result because of the inline percolator. This sideways perc allows a larger surface area