It is hard to find a portable dab rig that works efficiently. Grav Labs has created the circuit handheld two layer dab rig to be portable, sturdy, and efficient. This oil rig is almost 7 inches tall and comes with a 14mm female domeless quartz nail that fits onto the 14mm male joint. The first layer has a water jet perc that heavily filters your smoke with the water to soften it up. A pint-sized whirlpool is created but does not splash any water up as the second layer and 90˚ bent neck keep your mouth safe. A flared mouthpiece is located at the end of the neck for added comfort and creates an airtight seal.
Joint Size: 14mm male