Use the 14.6" (37cm) long Alpine Astronomical Baader Pan 3"/EQ Vixen/Losmandy Dual Clamp to quickly and securely attach your optical tube onto your mount head. The dovetail design allows it to accept standard Vixen-style plates, or larger 3" Losmandy ones, with a minimum plate length of 7.5" (19cm). A series of pre-drilled holes, in a variety of sizes and patterns, allows it to be easily mounted on a wide array of heads from popular manufacturers like Losmandy, Vixen, Celestron, Sky-Watcher, Synta, and many others. The clamping system is tightened using convenient thumbscrews and moves uniformly to ensure the maximum amount of clamping surface contact for a secure installation.