14mm Ash Catcher with Matrix PercThis piece both helps to keep your pipe clean while also providing a nice layer of filtration to your smoke. The design include a 90 degree and angled male joint (this joint is inserted into a bong's 14mm female joint), a matrix percolator, and a 14mm female joint on the top (this joint is where a 14mm male bowl is inserted). Made with high quality glass. Details: Matrix percolator 90 degree angle 14mm male joint for bong 14mm female joint for bowl