This section of the Kangyur contains the Cakrasaṃvara (དཔལ་བདེ་མཆོག་, dpal bde mchog) texts, arranged in two classes: (1) the Root Tantra, and (2) the Explanatory Tantras.
Literature:
Gray, David. The Cakrasamvara Tantra: A Study and Annotated Translation. New York: American Institute of Buddhist Studies, 2007.