Length: 3" Features: Its Venturi chamber features three air intake holes that cool and spin smoke before it enters a water pipe. The pre-mix chamber is designed for use with 14mm female-jointed water pipes and 14mm male accessories. DISCREET SHIPPING in an unmarked, plain brown box or padded envelope, with the sender as "bg" AUTHORIZED wholesale partner with GRAV AUTHENTIC high-quality scientific-grade borosillicate products, without lead or arsenic, unlike fakes and knockoffs TOP SELLER with 100% Positive Feedback