Chakrasamvara Tantras

Chakrasamvara Tantras (Tib.:kor lo dom pa gyu): the name of a group of related texts forming the principal anuttarayoga tantra class for the Wisdom (mother) classification. The Sakya Tradition maintains three principal lineages of Chakrasamvara (Luipa, Nagpopa, Ghantapa) and many minor traditions. There are over fifty lineages of Chakrasamvara practice in Tibet.

Source

http://mypage.direct.ca/w/wattj/Glossary.htm