Grav Labs 14mm Pre-Mix Helix Chamber Sherlocks Interchangeable plates let you choose

Interchangeable plates let you choose the fineness of your grind

this American-made piece features a fixed downstem paired with a precision ratchet perc that stacks bubbles efficiently for smoother

The Genius Mini is your perfectly dimensioned companion

Whether you're at leisuring at home or fast on-the-go in the strongest of winds

Grav Labs 14mm Pre-Mix Helix Chamber Sherlocks Interchangeable plates let you chooseThe Helix Pre Mix Chamber is 3" long and made on 19mm tubing. 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.