Made of fluoroplastic. For transition from a ground joint to a glass thread (e. g. SCHOTT bottle). Ground joint parts (condensers, stirrer bearings etc.) can be mounted easily on glass bottles or GL threads. Due to its snap-in function, the cap can be turned without removing the ground joint. Adaptor can be removed from the glass thread without twisting the connected tubing or cable. Made of fluoroplastic. For transition from a ground joint to a glass thread (e. g. SCHOTT bottle). Ground joint parts (condensers, stirrer bearings etc.) can be mounted easily on glass bottles or GL threads. Due to its snap-in function, the cap can be turned without removing the ground joint. Adaptor can be removed from the glass thread without twisting the connected tubing or cable.