• Externally threaded glass connectors.
• For use as replacement on apparatus using the GL thread or when designing items where the external thread is preferred.

Screwthread, GL” refers to a specific type of screw thread commonly used in laboratory glassware. The GL designation is often followed by a number (e.g., GL18, GL45), indicating the size or standard of the thread. This type of screw thread is prevalent in laboratory equipment such as bottles, vials, and other glass containers, ensuring compatibility and secure connections between different components in a laboratory setup.