All our murrine are made of Murano glass (coefficient 104) and can be used with glass sheet, rods and grits of the same coefficient. Please note: The dimensions are variable. Durante description you will find the minimum and maximum diameter that you will find Per mezzo di the package. Durante https://soffiato48259.bluxeblog.com/58565245/i-principi-fondamentali-della-vetro-colorato