These Andean pan flutes are made by the indigenous peoples of Otavalo, Ecuador. They are made from bamboo.
The small zampona pan flute has 13 tubes, the longest 8" long. The width of the flute is 3.25" wide, and it weighs 2.3 oz.
Please note that these are souvenir flutes and are not set to a particular key.
See the flute being played by the maker in his workshop in the video below.