HEMPER Turbine RigDescription HEMPER Turbine Rig! We were experimenting with different neck and percolator combinations. The shrub style body allows for massive rips and endless bubble stacking! Very little water is needed to achieve a smooth pull through this custom turbine percolator. Combine that with a Sidecar neck design which offers BOTH aesthetic and functional qualities, and youve got a nearly perfect piece! Aesthetically, bent necks give a unique look to your