Creates an even burn
Fits female joints
he 19mm GRAV® Male Octobowl is compatible with any 19mm female joint. Its glass screen is designed to catch ash and tar and hold plant matter in place, and an arm on the side of the bowl allows for safe handling. The Octobowl's substantial capacity is designed for use with larger water pipes and upright bubblers.The octobowl is a style of GRAV® component bowl that features a glass screen across its restriction. The 19mm Male Octobowl works with any 19 Female joint. Contrary to its name, the glass screen has six (not eight) arms branching out from a central axis. The glass screen is inserted after the rest of the bowl is finished, and then gently heated to weld it in place. The screen prevents ash and plant debris from entering the pipe. Octobowls have a glass handle extending from one side so they can be lifted safely even while hot.This piece features sleek and clean clear glass that allows you to watch this concentrate rig or water pipe function. Clear glass allows you to watch the bubbles stack as your smoke/vapor.