Specification Aluminum foil rolls 1 Alloy/ Temper 8011,1235/O 2 Foil thickness and toleranc (mm) 0.006-0.040 ±4% 3 Foil width tolerance (mm) 300, 400,450,600,etc. ±1.0mm 4 Inner core 76.2mm(3")/ 152.4mm(6") 5 Core material Steel/ aluminum 6 Outside diameter OD(mm) MAX:770mm 7 Surface quality One sight bright ,the other side is dull clear smooth , without defects, gaps, riddles lubricant leftovers, folds and mechanical defects, chromatic surface 8 Packing Rolls be pcked inside PE film with a desiccant which would protect from dust and moisture, latched in export standard wooden boxes.