If you have been smoking for awhile but keep coughing up when you smoke, you might want to purify your smoke better. That is why we are glad to introduce products like this Double-coil diffuser ash catcher. It significantly increases the comfort level of a smoke by purification it and makes sure that you get the best smoking experience possible. To top it all off it looks really great when it is added to a bong. This ash catcher comes with a double-coil diffuser to make your hits that much better.