MAK Intes Micro M603 Bahtinov Focus Mask for Telescope. Condition is New. Shipped with USPS first class mail. Free shipping! 3d printed from spencer-3d. Made with Carbon Fiber plastic. Black. Other colors available just message if want in another color. Or if need a Bahtinov mask that fits your telescope.  Let me know the brand and information and I can make what you need. I have many designs thats not posted on ebay,