Check the listing for details. 49mm Thread DSLR Camera Lense Bahtinov Mask CAP (VERSION THREE MODEL). Condition: New. Listed at 10.99 USD. HIGH BAHTINOV FACTOR VERSION 3 . MORE BAHTINOV LINES WITH THIN LINED MASK FOR HIGH BAHTINOV FACTOR! VERSION 3 IS THE 3RD VERSION OF THIS MASK. NEW DESIGN! CHECK OUT PICTURES AND COMPARE TO VERSION 1 AND 2 MASKS. MADE FROM HIGH DEMAND FROM CUSTOMERS. 49mm Version THREE of original DSLR Bahtinov masks models. Updated mask with better focusing, no text plain front with a more loose non binding pressure spring that now fits better and not binding to mask. 49mm Thread DSLR Camera Lense Bahtinov Focus Mask VERSION 3 High Bahtinov Factor . Condition is "New". Shipped with USPS First Class. shipping through USPS 2 to 3 days when buying inside the United States. Made with black plastic on 3d printers. Made and designed by Spencer-3D. If need a size thats not posted on my sells list just message me and I will make the size you need no problem. I can design or make changes on just about anything. If need a Bahtinov mask or part ti fit your telescope or camera message me. I do more then just Bahtinov masks, I make and sell alot of different things. I always have shipped out WITHIN 48 hours of purchase unless its an custom made part or its in a weekend or holiday. Usually %90 of items get made and shipped within 24 hours of purchase, so I pride myself on getting your project or products to you as soon as possible . Thanks....Matt SHIPPING CHARGES ARE CHANGING FOR ALL ITEMS I SELL ON EBAY. MANY ITEMS THAT ARE FREE SHIPPING WILL BE CHANGING SLOWLY TO SHIPPING THAT IS CHARGED TO THE BUYER. SHIPPING SUPPLY COSTS AND SHIPPING CHARGES ARE HURTING THE BUSINESS. BUT WITH SHIPPING CHANGES HAPPENING THIS WILL MAKE FOR LOWER PRICES ON THE ITEMS THEMSELVES.