HOYA Crystal Biata Tumblers This is a set of 5 tumblers. They were originally in a box as shown in images 5 and 6, but the box is not included. The product name is "Biata Tumbler," but they are small. They hold about 120cc when filled to the brim. Found at my parents' house. Brand: Hoya Crystal NTS6120 Height: Approximately 10cm Diameter (mouth): Approximately 5.2cm Diameter (base): Approximately 4cm