Sturdy ceramic mold with five spaces for adding texture to bottle rings. Designs are little criss cross stripes to add lines of detail to your donuts. Mold measures about 6″ x 4″, and each donut cavity is about 2″ wide. Sized to fit donuts cut from bottle necks, but can be used with any fusible glass. Fused donuts are great for jewelry, chimes, Ships with instructions and firing schedule. Not for use in Quickfire or Microwave kilns.