The Straight Tube Crystal Cane Bong from Grace Glass is clearly a great choice. Outfitted with a ten arm tree perc and a six arm diffused downstem, your hits are sure to be as clean as this piece. A classic carb hole sits adjacent to the ground joint and is closed with a rubber stopper, so you can clear it at any angle.
29.2mm Female Ground Joint
29.2mm to 18mm Reducing Downstem
Six Arm Diffused Downstem
18mm Slide Bowl with 9mm Inner Hole
Ten Arm Tree Percolator
7mm Thick Borosilicate Glass
Bubble, Bubble, Toil and Trouble
The glass bubbles around the mouthpiece perfectly accompany your own smoky bubbles. Let the decorative details cast a spell on your smoke sesh.
This downstem is truly one of a kind. First, it reduces the joint size from 29.2mm down to 18mm - perfect for the included bowl, or any other compatible 18mm male slide bowl. Second, the downstem ends in six separate arms - for serious smoke smoothing, before you even hit the perc.