Safely and easily connect and disconnect tubing from glassware and other tubing with just a quarter twist.. Eliminates broken glass ports and prevents twisted tubing. Polybutylene terephthalate (PBT) body safe to 392 F (200 C). Ethylene propylene rubber (EPDM) O-rings and gaskets safe to 302 F (150 C)Tubing-to-tubing connections, choose:1. One tubing coupling adapter2. Two tubing adapters (for the same or different tubing sizes)Tubing-to-glass connections, choose:1. One tubing adapter (depending on your desired tubing size)2. One glassware adapter (depending on your specific glassware portsize and type-threaded or barbed)Tubing to glassware, tanks, or walls, choose:1. A flask/bulkhead adapter2. An appropriate tubing adapter