Heavy weight thick walls brass Dabara Set for South Indian Filter coffee this product is being used by five star hotels - Instructions: - 1. Hand wash only do not use dishwasher 2. Brass as a metal has nature to oxidize use a solution of vinegar or lemon juice and salt diluted with some water at such times but not regular. 3. Do not use metal or any hard scrubber that can put scratches on body always use a soft sponge for washing 4. Use Copper and Brass Shining Powder or Food Safe Polish to shine is back to as brand new