Exclusively manufactured in the United States and designed by Sky High Glass, the Spiral Perc Diffused Downstem Ash Catcher is destined to become one of your favorite accessories to any water pipe. The diffused downstem allows for additional filtration as you take a drag using this piece. Aside from using beautifully colored glass to create this one of a kind look, Sky High Glass is known for using high-quality laboratory grade borosilicate glass in all of their glass products. The borosilicate glass feature ensures durability and longevity of life. Regardless of color, this ash catcher comes equipped with an 18mm male joint to fit any 18mm female joint, and an 18mm female bowl joint which accepts 18mm male joint sized bowls.