The Silicone Master Adapter can solve just about any glass fit problem, and seems custom-made for the Simrell Vortex. A must for your Vortex Using your Vortex with a piece of glass can scuff the finish of your stem. The Master Adapter’s flexible silicone creates a perfect seal with any water pipe or bubbler. It can separate into two pieces. The larger outside body has a 10mm, 14mm and 18mm universal fit for most female joint glass pieces.