Sig Sauer's Zulu Binocular Adapter is a perfect option for extended glassing sessions. It features a a sleek machined aluminum adapter post with a threaded lock-down system. The Zulu Binocular Adapter utilizes an Arca base and is compatible with Sig Sauer's ZULU10 HDX, ZULU8 HDX, CANYON HD, BUCKMASTERS Binocular, KILO10K-ABS HD, KILO6K HD, KILO6K HD Compact, CANYON Rangefinding Binoculars, and the majority of other binoculars with a 1/4"x20 threaded socket. Features:6063 Machined AluminumThreaded Lock Down Feature, Allows User to Tighten Bino Stud to PreventBinoculars From RotatingArca-Swiss Base with 1/4"-20 Threads for Universal Mounting1/4"x20 Bino StudZULU10 HDX, ZULU8 HDX, CANYON HD, BUCKMASTERS Binocular, KILO10K-ABS HD, KILO6K HD, KILO6K HD Compact, CANYON Rangefinding Binoculars, and the majority of other binoculars with a 1/4"x20 threaded socket Sig Sauer Zulu Flat Dark Earth Binocular Adapter