Heritage Arts plastic telescoping brush storage tubes have easy screw-and-lock adjustments and keep art brushes clean and protected when traveling. Expands from 10" to 18.5" with a 1.625" inside diameter. Designed to hold either short or long-handle artist paint brushes up to 18" long. Aerated to allow natural hair brushes to breathe, avoiding mold or mildew. Perfect for the artist on the go. NOTE: Brushes shown in photo not included.