Steel handle, 18/10 304 quality upper teapot and 18/10 304 quality lower water bottle are guaranteed for 5 years. PLEASE NOTE BEFORE USE: 1- Before first use, wash the teapot sets you purchased with warm water, dishwashing detergent and a soft sponge. Use a soft cloth for drying. 2- While your teapot set is on the fire, use a flame and burner suitable for the bottom of the teapot. 3- Do not place the steel teapot part of your teapot set directly on the fire. The teapot part is designed to be used only with the water bowl part.