I recently tooled-up dust covers for 8" OD tubes, and 5" OD tubes. Construction is hand-laid, molded fiberglass composite, painted with a black, textured finish, and felt-lined. You can add more felt to accommodate a slightly smaller tube if desired. Pricing is currently $20 each for the 8", or a pair for $30. The 5" are $15 each or a pair for $25. Each one is made-to-order only, I do not carry an inventory at present. I'll have a photo on my SLAS gallery page in a day or three. Fit and finish is professional/commercial grade. Dust covers for 12" OD tubes coming soon, as well as full-aperture Baader solar filters for these same tube OD's. Contact me for pricing on sizes not listed. If there is enough interest for a particular size, I'll tool it up.