The Helix Straight-Based Water Pipe is 8.75" tall and made on 60mm tubing. Its fission downstem diffuses smoke through water and is fixed inside the pipe to prevent breakage. Its Venturi chamber mouthpiece features three air intake holes that cool and spin smoke. The Helix Water Pipe comes ready to use with a 14mm Helix Taster Bowl and functions best with approximately 2" of water.