Used to install the wide rail tail plate, kaucho cleat side beveled edge, the other side is straight edge, you do not disassemble the rail in the case of quick installation to facilitate the addition of other accessories through-hole Simply screw the dovetail clamp onto your tripod , and you can mount your telescope on the tripod. protects the accessories and provides a very stable connection. The clamp itself can be adapted to a mount, to the counterweight shaft or another dovetail bar, building a double connection. Colour:Black Material:Aluminum Alloy Package Contents: 1 x Dovetail Slot Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.