This 2-in-1 "Grifter" oil rig and waterpipe from Chongz is the perfect solution for those needing to switch between herbs and concentrates. Efficient percolator technology cleans and refines smoke as it enters the chamber, while the 14mm female herb bowl with handle and 14mm oil dome with accompanying nail ensure a simple setup. At 15cm, it's just the right size for any setup.