These heavy duty cardboard tubes were designed to carry 81 mm mortar rounds, but can be used for a multitude of other uses. The heavy weight cardboard will protect the contents better than a standard cardboard tubeExternal Dimensions - 550 mm High - 100 mm DiameterInternal Dimensions - 540 mm High - 80 mm Diameter (100 mm from the bottom it narrows to 60 mm)Weight - 1.16 kg