Fits Celestron CGEM mount. Accepts both D Series and V Series dovetail bars. Split clamp design grips the dovetail bar along the entire surface of the saddle and will not dent or scratch the dovetail bar. This version does not include the two large locking hand knobs for customers who already own the CGEM Knob Kit. Spring loaded jaws, anodized aluminum and stainless steel construction. 7.75″ Long, 5.5″ Wide, 1″ thick, Wt. 68 oz.