274800 and 166000 adapters have outer Standard Taper joints at one end and inner Standard Taper joints on the other end

·         166100 adapters have inner Standard Taper joints at both ends

·         166200 adapters have outer Standard Taper joints at both ends

·         Joints are the same size

·         Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements