Switch²™ Quartz Insert is created from the purest quartz available under strict manufacturing tolerances to offer one of the cleanest, most uniform heating surfaces you can get in an e-Rig. Measuring in at a massive 20mm, roughly 300% larger than the original Switch, Switch²™ Quartz Insert is designed to fit flush inside the induction well, providing incredibly efficient heat transfer while ensuring all your material stays inside the insert for easy cleaning. *only compatible with Switch²™