D size Saddle, 14 inches long. With two non-marring saddle clamping bars.
Dovetail and Saddle plates allow you to securely attach one piece of equipment to another. The saddle plate screws to your telescope mount. You then slide the male dovetail plate onto the female saddle plate on your mount. The saddle plate has a clamping mechanism. Secure the clamping mechanism and your telescope is now securely attached to your mount.
Consider your weight load when choosing accessories. If you have any questions regarding which plate(s) you should use for your setup, give us a call at Cloud Break Optics. We're here to help.