Virgin cork bark tubes are great for mounting orchids, tillandsia air plants, bromeliads. Use in reptile terrariums. Long lasting durable. Cork is a natural product. Each piece is different. Color and size will vary. Most tubes have slice down one side from when it is removed from the tree. Some have knot holes and or small side tubes from smaller branches. Size ranges from 6 in. - 2 ft. long and 2 in. - 5 in round.