These 2 x 9 inch black mailing tubes are spiral wound from three plies of kraft with a .060" wall thickness, producing a rigid cylinder that resists crushing and bending under transit stress. The black exterior sets them apart from standard kraft tubes, enabling quick visual sorting by content type, destination, or priority without additional labeling.

The 9" interior length accommodates rolled documents, architectural drawings, posters, prints, and narrow cylindrical samples. The black finish suits high-volume mailers, print shops, galleries, and fulfillment centers that need a consistent visual system for distinguishing tube shipments at a glance.

Each tube includes white plastic end caps that seat firmly at both ends to maintain closure through handling and transit. Listed dimensions reflect usable interior space; actual tube length is slightly longer to accommodate the end caps. Sold in cases of 50.