High Five™ splash guard quartz inserts are produced from high quality lab tested GE214 quartz. The insert has a tapered opening to prevent oil escaping the bowl and spilling into the atomizer. Quartz features extremely high thermal conductivity and heat retention boasting high flavor preservation. Elevate your Duo experience with the splash guard quartz insert with superior flavor preservation & vaporization efficiency. The splash guard quartz insert can be torched clean with a direct flame for easy maintenance.