Made of Type 321 or 309, soft annealed, stainless steel, Precision Brand tool wrap helps protect work pieces from scale and oxide buildup during heat treating in atmospheric furnaces. Not only that, they also eliminate decarburization buildup. Our Tool Wraps are resistant to chromium carbide precipitation during exposure to high temperatures and can be used in furnaces up to 2000 degrees F. Precision Brand tool wrap protects the surface of air hardening tool steels. This cut-to-fit foil creates an airtight envelope around your part. It can be cut, folded, and crease-sealed with ease. Precision Brand tool wraps will not tear easily, and are available here in Singapore!