This is the Traditional variety (not Quick-fire) of Hadar's Clay™ Brilliant Bronze (gold color). It is the most suitable variety for making flexible clay. Full instructions can be found in the book The Handbook of Metal Clay: Textures and Forms, 2nd edition.
Hadar's Traditional/Flex Clay is also the most suitable variety for the Silhouette Cameo.
Hadar's Clay™ is metal clay in the form of powder. The powder is already mixed with a binder and all you have to do is add water. The advantages over pre-mixed clay are that you won't have to worry about shelf life, and that you can easily bring the clay to the desired consistency. Since it contains no preservatives the clay is very forgiving, soft, pliable, and sticks well to itself. It mixes quickly, with no mess.
Before using Hadar's Clay™ please download the Instruction Manual.