Ashcatchers provide a way to customize your water pipe as well as improve its functionality. An ash catcher is an add on instrument that provides extra smoke diffusion for your water pipe and prevents excess smoking material from exiting the mouthpiece. An ashcatcher can feature almost any type of diffusion system you might find on a bong such as honeycomb percs, turbine percs, tree percs, fritted disc percs and much more! Ashcatchers come available in all common sizes include 14mm and 18mm. They are available in 45 degree or 90 degree angles. It is very important to take into account the design of your water pipe before purchasing an Ashcatcher. For example, if the stem of your bong comes out at a 45 degree angle, you will want to purchase a 45 degree ashcatcher so that it stays perpendicular with the ground and water pipe. Additionally, you need to make sure that the joint size of your water pipe matches up with the joint size of the Ashcatcher. If the water pipe has a joint size of 14mm and male, the ashcatcher needs to be 14mm and female. In essence, the male joint needs a female joint and the sizes need to match up. Ashcatchers are generally manufactured by scientific glass companies, as elements of fluid dynamics are incorporated into each piece. Grav Labs, especially their Upline series, creates many different styles of ash catchers in all sizes. A great example is the Upline Ashcatcher. Featuring a long fritted disc perc, you can expect superb percolation from this piece. Rather than purchasing a whole new piece, an ashcatcher allows you to easily upgrade your water pipe, and they look awesome too!