The Flip Tip is a unique Patent Pending glass tip that only works with the Flip silicone tube. Special grooves on the inside of the silicone tube allow for perfect insert for either the chillum or straw end. The glass tip is made out of high quality Pyrex glass and is 2" tall. Pyrex is great for low temperatures. If you like to use high temperatures with your glass straws you may want to check out the Quartz Flip here
Cleaning Tip: Overtime silicone will attract dust and lint. To clean take a piece of tape and rub on silicone to clean.