Metal ring and knuckle style weapons date back to ancient times and have been used all over the world for many hundreds of years. Vajra mushti has been practiced in India since at least 12th century and mentioned in Manasollasa. The Nihang Sikhs used an early variant called Sher Panja in the 18th century. Cast iron, brass, lead, and wood knuckles were made in the United States during the American Civil War (1861–1865). Soldiers would often buy cast iron or brass knuckles. If they could not buy them, they would carve their own from wood, or cast them at camp by melting lead bullets and using a mold in the dirt.