Food packing aluminum foil 1. LFGB,GMC,ISO9001,QC certified 2. For cooking, Freezing, Wrapping,Storing Thickness 0.01mm to 0 ... . Core lock-locks in rollUsage For cooking, Freezing, Wrapping,Storing 1. lining Baking Pans-------For easy clean-up2. Freezing Meets------- ... Puncture vent openings4. Catching Oven Spills-------Small sheet of foil on rack below baking pan catches spills5. Lining Cookie Sheets ...