【Overlay Glass Material】 Glasses, Tokkuri (sake bottle), Guinomi (sake cup) 【6-piece set!】 - Color: Blue, Purple - Material: Glass - Type: Drinking Glasses and Vase Set - Number of Pieces: 6 Thank you for viewing. These are overlay glasses in purple and blue, materials used for Edo Kiriko and sandblasting. These are leftovers collected a few years ago for sandblasting. We hope you can use them for sandblasting, practicing Edo Kiriko, and creating artwork. Of course, you can also use them without any processing. There are some bubbles, but please understand this as a characteristic of handmade materials.