The GRAV® Wide-Based Water Pipe is 8″ tall and made on 32mm tubing. Its downstem ends in a wide conical fission perc that diffuses smoke through water and is fixed inside the pipe to prevent damage. The narrow tube leading to the mouthpiece prevents splashback. The wide-based water pipe comes ready to use with a 14mm GRAV® Cup Bowl and functions best with approximately 1″ of water.