Dr Dabber Switch 2 Sapphire Plus Induction CupSwitch Sapphire Plus Insert has been developed for those who want an unparalleled dabbing experience. Created out of a lab grown single crystal of the purest sapphire available. Strict manufacturing tolerances ensure incredibly efficient heat transfer when used with the induction heating system in Switch, and the 20mm diameter offers a massive dabbing surface. The Sapphire Plus Insert offers enhanced flavor, greater vapor purity, and easier cleaning