Sandstorm is an addition of tan to your Boro Batch palette when you use it in an oxidizing or neutral flame. When Sandstorm is used in a reducing flame you’ll bring out the incredible purples, greens, and blues. Sandstorm is a force of nature ready to see what you’ll do with it. Will you be a rider on this storm? Boro Batch Thins range from approx 3.5mm - 5mm in diameter.