Each package includes two 12" x 12" lead-free copper sheets. They are 99.9% pure 16-ounce copper and arrive in mill finish, also known as smooth commercial finish/annealed. Great for arts and crafts, enameling, copper repair, jewelry making, or electrical projects. 16-ounce or 24 gauge is roughly 0.0216 inches thick. 16 ounce copper is often referred to as "roofing copper" as it is a popular thickess for roofing and flashing. Flashing Kings copper is protected by a removable PVC film on one side to help preserve the materials natural beauty while it is being worked or installed.