The Sikhs were commanded by Guru Gobind Singh at the Baisakhi Amrit Sanchar in 1699 to wear an iron bracelet called a Kara at all times. The Kara is a constant reminder to always remember that whatever a person does with their hands has to be in keeping with the advice given by the Guru. The Kara is an iron/steel circle to symbolise God as never ending. It is a symbol of permanent bonding to the community, of being a link in the chain of Khalsa Sikhs.
