Medium Duty 400mm x 300m Black Cast Pallet Stretch Wrap Film, Ext. Core (Box of 6)6 x 400mm x 300m 17 Micron Black Pallet Stretch Wrapping Film Extended Core This clear stretch wrapping film offers excellent puncture resistance and high tack characteristics. Our cast stretch wrap offers a good level of transparency and is softer and easier to work with than blown stretch wrap. Quieter and easier to work with then Blown stretch films Clear 17 micron cast polythene stretch film Core diameter 38mm Film width 400mm on extended core