This Havan Kund without base made in pure copper for agnihotra. Havan Kund is one of the most important part for the ritual.

Havan Kund is the center place in a Havan in which the fire is put and all the oblations/offerings are made. It could be considered like a sanctum sanctorum for a Yajna. The structure of the havan kund itself generates energy to perform the rituals. 

Dimensions: 10 inches (L) x 10 inches (W) x 4 inches (H)
Weight: 600 grams approx

The Vedas, the most ancient wisdom revealed to man, have recommended Agnihotra, so that man can build up a fundamental attitude towards his life from body, mind and soul angle. Innumerable persons, by performing Agnihotra regularly, have experienced this basic change in their way of thinking, towards ever mounting problems of life. With the researches on Agnihotra a new horizon has been re-opened, for the IT generation of the world. The Agnihotra is the ‘Nitya’ Yajða. Nitya denotes its regular nature. As per the Vedas, it is to be performed every evening and every morning, ie. exactly at local sunset time and exactly at local sunrise time. ‘Agni’ means fire and ‘hotra’ means offering oblation. Thus Agnihotra is the act of offering oblations to Agni - fire. It is not a mere ritual. But is a part and parcel of Vedic science. This Yajoa is to be performed regularly throughout the life. Yajða is the technical term from the Vedic science of bioenergy denoting the process of removing the toxic conditions of atmosphere through the agency of fire. This meaning purifying of the atmosphere with fire as the medium. When one heals the atmosphere, the healed atmosphere heals him. As any other Yajða, Agnihotra is performed in a special manner. Certain disciplines have to be followed while performing Agnihotra. With a little practice everyone can perform it. It does not take more than five to ten minutes to perform.

Procedure
Agnihotra is performed twice a day. A semi pyramid shaped copper pot is prescribed for Agnihotra. The pot - copper pyramid should be placed on a fire-resistant place. When the fire is ignited in the pot, it gets quite hot. A small fire is prepared with the dry cow-dung cakes in the pot. The cow-dung pieces should be arranged so that there is good ventilation in the pot. First put a small piece below and then arrange the pieces- one above the other to let have some gap in between them. One can use gugul, camphor or cotton wick soaked in cow ghee to ignite the fire. Use of any petroleum products should be strictly avoided. For oblations raw rice is required. Thirty to thirty -five grains per oblation are sufficient. It is almost two pinches of raw, unbroken rice grains, smeared with clarified butter made of cow’s milk. Two to three drops of ghee are sufficient. Then with the right hand give the offerings. The oblations are offered while chanting two Vedic mantras that are very simple.

The mantras for the sunrise are :

"Sooryaya Swaha"

(Add the first portion of rice mixed with some drops of ghee to the fire)

"Sooryaya Idam Na Mama Prajapataye Swaha"

(Add the second portion of rice mixed with some drops of ghee to the fire)

"Prajapataye Idam Na Mama"

The mantras for the sunset are :

"Agnaye Swaha"

(Add the first portion of rice mixed with some drops of ghee to the fire)

"Agnaye Idam Na Mama Prajapataye Swaha"

(Add the second portion of rice mixed with some drops of ghee to the fire)

"Prajapataye Idam Na Mama"