HS Wholesale GRAV® - 4“ Glass Blunt Hand Pipe with Silicone Grommet (MSRP $10.00) GRAV® - 4“ Glass Blunt Hand Pipe with Silicone Grommet Description: Discover GRAV®'s 4" Glass Blunt Hand Pipe with Silicone Grommet – the epitome of simplicity and innovation... Quick view