These mini oil rigs were locally hand blown right here in Washington by glassblower, Michael Shea.
Each one stands about 5.5" tall and has a 14mm female joint. From the ground joint, the smoke splits into two passageways before meeting up again to be diffused in the 3 slit inline perc.
Each rig has green stardust colored accents on the mouthpiece, ground joint. and the base. They also feature a decorative magnification bead on the back.
Nail/bowl not included.