Vajra Mushti

Vajra-musti (Sanskrit:वज्रमुष्टि, “thunder fist” or “diamond fist”) refers to a “fist-load, knuckleduster-like” weapon and also a form of Indian wrestling in which the weapon is employed. The weapon is sometimes called Indra-musti which means Indra’s fist.
The vajramusti is usually made of ivory or buffalo horn. Its appearance is that of a knuckleduster, slightly pointed at the sides and with small spikes at the knuckles. The variation used for warfare had long blades protruding from each end, and an elaborate bladed knuckle.