Eco Friendly Brown Kraft Mailing Tubes 1040x90x1.8mm With White Cap.. Make a professional impression when sending calendars, posters or documents. • 3-ply spiral wound. • Plastic end caps reinforce shape and won't "pop off" during shipping. • Mailing tubes are extremely cost effective solution for businesses and individuals to send their paper items through the Australia post, or couriers . • Mailing Tubes protects items getting creased or damaged.