The rod sources are available in two sizes: a tube with a length of 74.9 mm or a tube with a length of 127 mm. The diameter is 12.7 mm.

The sources are calibrated at the factory and are therefore highly accurate.  

Following sources can be supplied: 
Co-57, Cs-137, Ba-133, Co-60, Mn-54, Na-22, Cd-109 and Eu-152.