The double vortex by DankGals features two highly functional recycling chambers! The circle perc in the middle chamber kicks off percolation, watch your smoke rise and swirl through each vortex chamber for the smoothest hit! The colored glass materials are from the industry's best. Trautman Art Glass in Oregon and hand pulled glass rods by Momka Glass in Seattle. Stands 8'' inches tall and features a 14mm female joint.