QSA Global - Source Guide Tubes QSA Global| QSA Global - Source Guide Tubes Print QSA Global| QSA Global - Source Guide Tubes Source guide tubes are made of flexible stainless steel with a protective polyvinyl cover. All guide tubes and extensions have a standard length of 7 feet (2.1m). Custom lengths are available on request. TAN48906: Source guide tube with stop, 7 feet (2.1m) – Yellow. 95020: Extreme temperature source guide with stop, 7 feet (2.1m) – Black. Extension TAN48907: Source guide tube extension, 7 feet (2.1m) – Yellow. 95021: Extreme temperature source guide with extension, 7 feet (2.1m) – Black. Adaptor 88082: Swivel bayonet adaptor for 880 projector. Request for information