The GRAV® Ash Catcher is 5" tall and made on 38mm tubing. Attach it to any water pipe and many concentrate rigs for extra filtration and to help keep your glass pieces clean! Its fission downstem diffuses smoke through water and can be removed for easy cleaning. Its 90° angled arm is designed for use with a 14mm female joint on any straight-based water pipe. The ash catcher comes ready to use with a 14mm funnel bowl and works best with approximately 1.5" of water.