Whether you're looking for handblown glass pre-coolers for your bong, thick glass percolator ash catchers, or are just delving into the world of ash catchers, Billowby's online head shop has the best ash catchers online. For those new to the more intricate parts of smoking accessories, ash catchers are one of those items that some people swear by and some people don't. The basic idea of an ash catcher is, well, it catches the ash. Catching the ash ensures the bong will stay cleaner longer - adding an extra layer of diffusion for your piece. When you smoke, ash will fall into your piece but the ash catcher ensures debris won't travel. Instead of having to clean your bong all the time, you can simply clean out the removable ash catcher. On top of filtration, ash catchers can act as an extra chamber; adding room for more intense hits. Ash catchers are entirely a preference and you can still get an enjoyable experience without the addition of one to your collection. All this talk and no mention of a pre-cooler?! Keeping it short and sweet, pre-coolers are pretty much the same thing as an ash catcher. Pre-coolers are a piece that you attach to the downstem to allow for more filtration/bigger hits. That's it! From Grav Labs honeycomb ash catchers to multi-chambered pre-coolers, you're sure to find the perfect piece for your new water pipe. For more information, feel free to check out the reviews listed on our product pages.