These beautiful 4-arm perc 90 degree ash catchers are a bongs best friend. Made from borosilicate glass so it can take the heat, the coloured glass on the percs add a nice touch while filtering the smoke for the tastiest hits. Meanwhile, keeping your bong fresh and clean for longer. Choose between clear, blue, and green! Best suited for bongs with joints at a 90 degree angle (straight up). 19mm joint/19mm bowl. Why an Ash Catcher? Ash Catchers are excellent attachments for your bong or water pipe that enables additional smoke filtration, while at the same time keeping your favourite piece clean from ash and other by-products of smoking. Ash Catchers act as an additional chamber for your bong/water pipe, making the smoke travel further before inhalation for cooler hits. Since ash catchers are available in a multitude of shapes and sizes, personalizing your favourite piece is easier than ever. Mix and match colours and percolators to create a bong set up that’s truly unique. If added percolation and filtration wasn’t enough, ash catchers also act as a barrier catching ash, resin, and other residue from entering your bong, providing cleaner and better tasting hits. Removing the ash catcher to soak and clean is a far less hassle than cleaning the entire bong set up every time.