Silicone Pipe Conversion 14mm Glass Adapter for 18mm Joint

The silicone pipe adapter is made of high-quality glass. Perfectly turns any 18mm joint into a 14mm one on the market.

How to clean a glass adapter?

1. Put the glass adapter into a storage bag.
2. Pour the alcohol of 70% concentration or higher in the storage bag, together with some coarser salt.
3. Shake up the storage bag until the water changed to a dirty brown.