Kartika (knife)
A kartika or drigug (Sanskrit: kartari; Tibetan: གྲི་གུག་, Wylie: gri-gug, or kartrika in Nepal) is a small, crescent-shaped, hand-held ritual flaying knife used in the tantric ceremonies of Vajrayana Buddhism. The kartari is said to be "one of the quintessential attributes of the wrathful Tantric deities".