Check the listing for details. Celestron Edge 8" W/ Hyperstar 4 Dust Cap, Split, connects on telescope.. Condition: New. Listed at 21.99 USD. Celestron Edge 8" W/ Hyperstar 4 Dust Cap, Now upgraded and thicker mask to have more strength. Celestron HD 8 Inch , this version is meant for Edge HD 8 with Hyperstar 4. It connects on end of telescope and comes in a split design to put on and off very easily. measurements before purchasing for your telescope. . This is meant for Celestron hd 8 with Starzona Hyperstar 4. , if buying for regular version it will have some space in middle diameter hole of cap. Special design to split apart. More options will be available for the HD 8 hopefully soon. 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 free USPS SHIPPING. 2 TO 3 DAY SHIPPING. BLACK . Other colors and types available just ask. Fits Celestron HD 8 Inch w/ Hyperstar 4. If need a particular size message me,or if have questions.