Tool wrap is made of Type 321, high titanium, soft annealed, stainless steel. It helps protect from scale and oxide build-up during heat treating in atmospheric furnaces. It can also be used to create an airtight envelope around your part. It can be cut, folded and crease-sealed with ease and will not tear easily in normal use. Size: - approx. 24" x 50' long x .002" thick.