The following five K's are the mark of Sikhi. These five can never be parted from the body. Kara, Kirpan, Kashera, Kangha, recognize these as four of them. The fifth is Kesh, without which the other four are useless. There are also four H's which must be avoided. Understand this without any doubt, no lies have been told. Hukka, taking tobacco (including any other type of intoxicants). Hajamat, removing of hair. Halalo, eating meat. Haram, adultery (sexual relationships outside of marriage). These are the four H's. Dyeing of beards (including any other body hair), and the wearing of mehndi (including other types of make up) are strictly forbidden. - Dasam Granth-Sri Guru Gobind Singh Ji
KESH: Uncut hair is regarded as a symbol of saintliness as one accepts and lives in harmony with the lords will. Removing of the hair is seen as acting against the lords will. Shaving and cutting of the hair is a major taboo, as one will live in disharmony with the lords will. Sikhs believe hair have particular functions and were given to us by the lord for a purpose.
KANGHA: a special wooden comb. This is necessary to maintain the hair in a neat and tidy form. A Sikh must comb their hair twice a day and cover them with a dastar (turban). The dastar protects the hair and is an essential part of the Sikh uniform.
KARA: an iron bracelet, which is worn on the predominant arm of the Sikh. It reminds the Sikh of the vows taken by them, it is a constant reminder that they aren’t to take part in any activity that will bring shame and disgrace on them (for example stealing).
Kacchera: A special type of shorts to be worn at all times. It reminds the Sikh of the need of self-restraint over corrupt desires. Apart from its moral aspect it is ideal as practical martial underwear.
KIRPAN: the sword is worn solely for protection of righteousness, humanity and justice. It is a sign of readiness to confront injustices, it symbolizes dignity and self-reliance. One is capable to defend themselves, and the innocent-weak person from oppressors. It is the minimal protection that a khalsa soldier must carry at all times.
Frontline comments:Don't know why people argue about kesh or keski being a kakkar, ideally they both go together. The dastar was given to all Sikhs by Sri Guru Gobind Singh Ji. Guru Ji even told us in his Bani without Kesh all the others become useless!