Check the listing for details. GRAV Helix Steamroller Pipe (6”) — Retired!. Color: Clear, Condition: New. Listed at 69.99 USD. BolderGlass is the ONLY Authorized GRAV Retailer for eBay and Amazon.GRAV will only honor their lifetime warranty for returns and exchanges from BolderGlass, and no other Seller. Height: 6"Features: This steamroller features a venturi chamber that spins, cools, and aerates. Three tungsten micro-holes filter and cool outside air being pulled in, creating the distinctive spiral in the chamber. The steamroller's foot and mouthpiece stabilize the pipe between uses. NOTE: All GRAV Helix decals are Etch, meaning they have a frosted look that is physically etched into the glass. This eliminates the possibility of decal damage, while also hindering counterfeiting, thus ensuring your product retains its value for as long as possible. DISCREET SHIPPING in an unmarked, plain brown box or padded envelope. The Sender's name is BG, which has a PO Box address