This WonderTube consists of 2 layers of Exp. #140 Jupiter V1 with 1 layer of Simax clear on top. With Jupiter being a striking gold and silver color with an opalescent hue, this color yields rich transparent oranges and pinks. The Simax clear coat allows for a more controlled strike, although it is unaffected by the kiln. Therefore, the strike varies depending on the thickness of the glass and flame chemistry. Easy to use and flame stable.