The Elements Zirconium Concentrate Nail is a must have for anyone who uses an oil rig and dome. Made out of Zirconium, this nail heats twice as fast as titanium and last three times as long! Each one comes with 14mm and 18mm crucible, a 14mm and 18mm anodized rig collar, and a 4mm threaded titanium shaft for easy adjustments. Made to be easier and quicker to use, the Elements Zirconium Concentrate Nail will enhance any smoking experience.