7" STAX® Turbine Base made on 44mm tubing with a Turbine disc, matrix perc, 34mm plastic joint clamp, and 14mm STAX® Funnel Bowl. Fits any STAX® perc or mouthpiece.The STAX Turbine base is 7" tall and made on 44mm tubing. Its stereo perc diffuses smoke through water, and its Turbine disc spins and blends the smoke and water together in a powerful vortex. The Turbine base comes with a 14mm STAX funnel bowl and can accommodate any STAX percolator or mouthpiece. This base works best with approximately 3" of water.