Check the listing for details. Celestron Edge 8 Inch Bahtinov Mask, Split mask bolt on design, Version Orange!. Condition: New. Listed at 15.99 USD. Special design to split apart to two pcs, and bolts together so it may be put on without taking off parts from tge telescope. Comes with set of 4 bolts and nuts and Bahtinov mask. Can put on and off even hand tightened to make easier. More options will be available for the HD 8 hopefully soon. Bahtinov Focus Mask for Telescope - Celestron Edge HD 8" .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. Orange version, but can come in any color you want, or black. . Other colors and types available just ask. Fits Celestron HD 8 Inch. If need a particular size message me,or if have questions.SHIPPING CHARGES ARE CHANGING. MANY ITEMS THAT WHERE FREE SHIPPING IS CHANGING TO SHIPPING THAT IS CHARTO BUYER. COST OF SHIPPING SUPPLIES AND SHIPPING RATES ARE GOING UP. AND LAST YEAR THIS BUSINESS WAS HOT HARD FROM COSTS FROM BOTH THAT TOOK AWAY FROM PROFITS OF TUE BUSINESS. BUT IN RETURN COSTS OF THE ITEMS WILL GO DOWN SOME. AND FASTER AND BETTER SHIPPING WILL BE AVAILABLE.