Use the Alpine Astronomical Baader V190 PAN-EQ-Clamp Vixen-Style Saddle to quickly and easily attach your optical tube assembly (OTA) or other gear to your mount head. The saddle is sized to fit the most popular size dovetail plate—the Vixen style. Two thumbscrew bolts lock the plate into the saddle for easy setup and breakdown. The saddle comes with pre-drilled mounting holes designed to match many popular manufacturer mountings, and the bottom is machined with a larger dovetail that allows the whole saddle to fit into heavy-duty Losmandy-style saddles—effectively converting a large Losmandy saddle into a smaller Vixen type.