Check the listing for details. Explore Scientific ED102 Bahtinov V2 Edition Spencer-3D. Condition: New. Listed at 12.99 USD. Bahtinov Focus Mask for Telescope - Explore Scientific ed102 SLIDE ON. Condition is New. Shipped with USPS First Class. Software Designed and tested. Works great with these and similar models. 3d printed and designed by Spencer 3d. As always fast USPS SHIPPING. 2 TO 3 DAY SHIPPING. BLACK . Other colors and types available just ask. Will receive orange or black unless you need a particular color then please let me know by message. Thanks. New version two ed102SHIPPING CHARGES ARE CHANGING DUE TO HIGHER PRICES ON SHIPPING SUPPLIES AND ON SHIPPING RATES. MOST ITEMS THAT WAS FREE SHIPPING WILL BE CHANGING OVER TO SHIPPING THAT IS CHARGED TO THE BUYER. BUT THAT WILL ALSO MEAN MORE AND BETTER SHIPPING OPTIONS, AND FASTER SHIPPING. THIS WILL ALSO MEAN CHEAPER PRICES ON THE ITEMS.