Coppertex paper protects copper, brass, bronze, and other copper alloys from tarnish, staining and corrosion during storage and shipment. Nitrite-free. 35 lb./57 gsm kraft is saturated both sides with proprietary VCI, printed one side to identify it as valuable packaging. Convenient size roll is easy to handle and use. Designed for individual parts wrap, and as interleave between layers of parts.